Synonym of inexpugnable

adj.

incapable of being overcome, challenged or refuted

fixed settled set firm determinate final hard stable certain frozen flat hard-and-fast definite decided unbending conclusive absolute decisive invariable strict inflexible unalterable established determined specified definitive positive rigid sure explicit unchangeable unchanging unyielding undeviating hard and fast irrefutable incontrovertible irrevocable express indisputable agreed defined precise known steadfast binding arranged irreversible ultimate preset immutable confirmed unvarying resolved unwavering predetermined true unchallengeable constant unanswerable consistent stubborn rooted emphatic intent immovable hardened obstinate unqualified inveterate hard-line bound stiff cast-iron dyed-in-the-wool ironclad never-failing set in stone pegged unfluctuating regular straight uniform nonnegotiable permanent unappealable stringent entrenched deep-rooted concrete determinative peremptory irremediable unreversible hardheaded ingrained deep-seated unrectifiable lasting indelible finished changeless unrepealable fast hard-nosed unbreakable uncompromising unmoving tight rigorous iron-fisted exacting written dictated mandatory compulsory solid well-set hidebound solid as a rock pigheaded stiff-necked locked in jelled unflappable set in concrete carved in stone quantified resolute allotted prearranged limited decreed prescribed incommutable steady exact planned inalterable distinct unswerving adamant unflinching obdurate unblinking stalwart unfaltering categorical enduring abiding still stated unmovable unmodifiable stipulated insistent unshakeable whole-hearted assertive staunch intransigent determining in earnest unrelenting committed implacable dominant unmalleable relentless purposeful writ in stone in the bag not subject to change prevailing persistent unshakable unshaken tenacious seasoned domineering persevering going bent stand pat hell-bent on single-minded strong-willed do-or-die hell-bent upon bent on bent upon hang tough through-and-through dead set on undeniable unquestionable indubitable unequivocal plain unmistakable undoubted incontestable clear evident transparent palpable obvious ascertained patent manifest recognized inarguable undisputed beyond doubt unarguable irrefragable accomplished sealed beyond question unquestioned unchallenged accepted acknowledged uncontested not in doubt nailed-on not in question confirmable authoritative recognised verifiable demonstrable supreme provable unambiguous establishable real safe genuine sure thing having down pat there are no two ways about it all sewn up as sure as eggs is eggs dogged strong dedicated tough inexorable pertinacious forceful willful devoted loyal faithful indefatigable headstrong mulish indomitable strong-minded vigorous unflagging bullheaded earnest reliable intractable adamantine indurate unhesitating wilful spirited dependable opinionated self-willed ardent bold secure perverse steely severe stout trustworthy devout untiring harsh undaunted trusty true-blue zealous ossified pat stern wholehearted driven inconvincible confident iron sound durable rock-ribbed iron-willed unfailing self-opinionated serious assured imperious continuing long-lasting gritty refractory long-standing tireless good valiant sincere eternal dutiful fanatical courageous brave unassailable persisting grim pious plucky hard-core gutsy sturdy unbendable draconian enthusiastic pushy mettlesome deep hardline dead set brassbound fierce recalcitrant focused stout-hearted allegiant diehard stanch aggressive passionate lionhearted demanding doughty authoritarian long-established overbearing long-lived ineradicable commanding deep-dyed perseverant compelling down-the-line perennial tried and true tried and tested intense keen powerful fervent bossy focussed honest assiduous unpersuadable long-term die-hard vehement bloody-minded uncompliant incompliant spunky convincing out tried strenuous contumacious dogmatic deliberate feisty ruthless bull-headed undying responsible unadaptable manful surviving unremitting guaranteed unreasonable lifelong remaining sworn autocratic dictatorial card-carrying diligent upright full of determination infallible fearless tried-and-true perpetual ambitious unsparing fervid true blue everlasting valid cussed importunate set in one's ways conscientious unerring cantankerous irremovable intrepid bred-in-the-bone honorable honourable balky purposive attached imperative energetic heavy-handed uncooperative extreme self-confident oppressive radical even austere lordly bulldog unswayable obsessed self-assertive obsessive patient true-hearted bullish cruel magisterial hell-bent indestructible masterful eager patriotic out-and-out imperishable well established unfading audacious hard-working tyrannical immortal clear-cut unmanageable well-established forward meaning business robust set on unvacillating impregnable unmoved self-assured profound remorseless ongoing perdurable trusted militant through and through sharp trustable self-possessed convinced motivated invariant stubborn as a mule drastic callous mad keen calculable heroic merciless intrenched chronic effective hearty stony industrious avid unpermissive defiant high-handed active high-spirited lusty stationary rough despotic watertight sedulous impressive imposing collected proven unending hanging tough incurable composed brick-wall liege dynamic scrupulous ornery predestined destined incorruptible undisputable daring traditional intent on truthful hard as nails dateless timeless ageless static unappeasable bound and determined impassioned pig-headed influential determined to unswervable indissoluble concentrated unsympathetic bolshie enterprising persuasive complete insistent on resilient thorough dauntless four-square unquestioning salted away on ice fixated thoroughgoing hard-hitting long-running invulnerable well-founded supportive telling incorrigible heartfelt locked contrary equable habitual unaccommodating compulsive unafraid unrepentant urgent adherent pushful studious sustained savage cogent unapologetic unashamed forcible level inured difficult dire rugged pledged overweening ramrod incisive firmly established specific go-getting beyond dispute tyrannous autocratical tyrannic undismayed impervious trenchant standing one's ground cross-grained arrogant high-principled direct red-hot well-defined hell bent on doctrinaire implanted dug in rebellious invincible absorbed engrossed insubordinate orthodox poised dour keen as mustard unconquerable confining behind one pure deaf to reason excessive untoward committed to the idea of picky gallant valorous immotile heavy redoubtable gung ho unshrinking basic fundamental in-your-face unaffected bulletproof concentrating can-do preoccupied inbred mule uninterrupted time-honoured anchored brutal foolproof restive unconditional ferocious self-asserting potent unruffled occupied disciplinary immersed utter independent immobile airtight violent continuous inbuilt built-in unsurpassable calm dominating fiery doubtless cool unfazed hitched riveted unsentimental burning sempiternal froward unceasing proved desperate hooked incessant impassive inevitable flinty possessed subconscious lingering inherent innate close embedded exigent pressing nailed revering accustomed habituated staid longstanding arbitrary unchanged longtime fortified full-bore self-reliant venerating greathearted gutty stouthearted undauntable heroical no-nonsense rocky old coercive straightforward inexhaustible stony-hearted unforgiving unbroken monomaniacal resounding decent imperial inseparable mean solemn not giving an inch undefeatable predictable arrant right-down cynical continual irrepressible righteous hard-shell hard-boiled unimpeachable true to life hardhearted standing pat made fast hardy crisp possessive accurate instilled hard-hearted wrapped up effectual ringing significant plausible efficacious weighty lucid intelligent undeterred clamorous infixed hard-bitten pitiless sure of oneself two-fisted game bosom monotonous truehearted deeply felt pertinent officious boon cut-and-dried tough nut to crack impeccable formidable well founded single-minded about firm about stabile deep-down full-fledged obedient not backward in coming forward deep-set resolved to veracious by the book hard to please deeply ingrained fail-safe confiding obsessive about loving circumspect on the level inflexible about on one's mettle out and out sure-fire fixated on fanatical about beyond a shadow of a doubt affectionate string along with clinging self-disciplined mature ended bombproof not joking predisposed tending inclined leaning disposed standing hardboiled buckled down firmly-based sine qua non like granite unforgettable ineffaceable unaltered immoveable uninfluenced mullish unintimidated free from doubt persuaded satisfied for a fact noncompliant awkward time-hallowed cocksure resistant formal unbeatable forbidding illiberal gut instinctive intrinsic hopeless stiffened non-compliant rocklike competitive uptight blinkered renitent endemic unbothered untouched unvaried unmodified moored fastened risk-free unbudgeable immalleable self-evident clinching masterly high-stake winner-take-all zero-sum win-or-lose irradicable inannihilable worn low-risk high-powered never-tiring puritanical brassy iron-jawed unabashed undebatable punishing punitive Draconian time-honored age-old ancient hellbent credible engaged enthralled living steamroller nervy powerhouse riskless hopeful in place in position unimpressionable resolute about driven in beyond hope undoubting poignant acrimonious drawing grave stuffy spartan stroppy narrow-minded bidding ordering biased cohesive unimpressible systematic meticulous painstaking on one's side quiescent sagacious attentive heady opinionative impatient sticky imperturbable nerveless impertinent bullhead uncompassionate unemotional preconceived coherent apodictic manly engagé telelogical calculated surefire contrarious lengthy extended unwearied Herculean assaultive high-pressure punitory unsinkable ironhanded onerous congenital undiscouraged unstoppable untameable insurmountable insuperable rock-hard unflexible unforgetful dinkum tried and trusted dashing inspired hungry consumed compelled unquenchable bitter furious granite lion-hearted cold fish proof against persuasion carnivorous open and shut dyed-in-the wool brusque grounded as thick as thieves tough nut impassable never-changing marathon perceptive take charge adoring goody-goody worshipping worshiping heart-and-soul pietistic thirsty desirous striving reputable respectable mean business inerrant questionless failsafe uncharitable set in your ways believing in oneself going for broke all out flat-out satisfying great material crystalline abrupt summary brisk going all the way serious-minded meaning what one says fundamentalist never-ending ceaseless in for long haul like bad penny stick to guns in good faith well grounded iron-handed galvanized impelled clear-sighted straight out tall in the saddle intent upon insistent about careful incorrupt vicious truculent virulent religious as keen as mustard single-hearted old faithful true to the end given over to can't-miss playing hard ball to the core not put off not discouraged firm in spirit animated tough-minded resourceful weariless observant wrong-headed interminable endless non-stop regimented fixed as the laws of the Medes and the Persians not changeable by the numbers staying put hardhanded disciplinarian ascetical astringent browbeating ascetic conservative reverent induced aspiring obsessional do or die hold one's ground hold the fort hold the line clamant crying reiterative salient decided upon strait-laced etched in stone nonmoving based on perfervid inborn inexpungible forever controlling self-respecting be out for blood nose to the grindstone with one's feet dug in with one's toes dug in prayerful goody two-shoes nasty intuitive insightful relevant ingenious adventurous have-a-go fortress-like intolerant correct believable disciplined controlled entire all exclusive enrapt whole undivided pushed steered guided impulsive besetting galvanised unbudging torrid impenitent irredeemable unreformable plugging jumping go-go grind unstinted hyper perky fireball continued plodding sticking to one's guns daredevil nonmotile repressive self-starting hard-driving lofty cold unfeeling abrasive unjust unfair venturesome ballsy death-or-glory moral right just virtuous ethical nice total watchful alert sicker standardized nonstop homogeneous regularised regularized standardised goal-oriented uncaring venturous right-minded all-or-nothing cocky dogmatical Neronian urged on self-driven imprudent herolike chivalrous chin-up foolhardy as game as Ned Kelly fortitudinous like the Rock of Gibralter solid as rock pugnacious unkind inconsiderate heartless insensitive veridical undistorted square worthy creditable all right estimable deep down in a straight line balanced bona fide in charge eager beaver high and mighty crack-the-whip throwing weight around haughty egotistic pompous dictative proud case-hardened principled in for the long haul till the cows come home no lie up front all-consuming rowdy intensive curt hard-headed hard-shelled rational adult minding certified lifetime undisturbed competent capable of being trusted efficient capable qualified able shrewd practical realistic cool-headed lodged in one's brain closely controlled strictly controlled rigidly enforced flawless perfect matter-of-fact down-to-earth affirmed livelong out to fixed upon anxious to committed to intending to fixed on obsessed with resolved on impatient to decisive about determined on full-blooded muscular well balanced well-built well-balanced lifetime's trying perfectionist toughened world-weary indurated unperturbed on the up and up remove secured attested downright outright set firm hard-edged compacted packed hard-handed compact impenetrable consolidated compressed quiet situated located tiresome critical judgmental disapproving fussy glaring stressed important pointed sober accented iron-clad all-time for life lacking sentiment peaceful recollected untroubled coolheaded serene limpid equal unworried tranquil sedate together placid self-composed smooth for all your life one hundred per cent overexacting unamenable querulous troublesome cavilling nagging fractious as hard as nails as tough as old boots toughened by experience no mistake copper-bottomed quibbling disparaging hypercritical sticklerish faultfinding overscrupulous needy hairsplitting caviling censuring cavillous unalarmed for a face univocal black-and-white demeaning carping censorious well-marked minute forthright graphic pronounced full clean-cut distinguishable noteworthy audible visible tangible undubitable silhouetted vivid well-grounded at peace over-rigorous fault-finding over-particular over-strict over-exacting hard to satisfy over-censorious high-maintenance without loopholes black and white as plain as daylight clearly defined cut and dried crystal clear not vague as plain as the nose on your face

unconquerable indomitable insurmountable invincible unbeatable bulletproof enduring impregnable insuperable invulnerable irrepressible irresistible unstoppable unyielding indefeasible innate intractable resistant secure unassailable unattainable undefeatable undefeated unsurpassable unshakeable impassable strong indestructible inviolable safe untouchable unattackable overwhelming unflinching indefatigable unbending impenetrable firm staunch resolute steadfast impossible stalwart hopeless intransigent lionhearted supreme dauntless determined challenging tough willful dogged doughty steely spirited unshakable stout powerful strong-willed well fortified well defended strong-minded stout-hearted safe and sound unfaltering unflagging feisty above criticism undismayed sacred hallowed sacrosanct holy insusceptible well-defended immovable insensitive impervious immune matchless solid fortified unsurpassed peerless unmatched unsurmountable excellent outstanding proof against unexcelled no-win inaccessible unmasterable ineluctable persisting persistent inevitable inescapable unrelenting inexorable overpowering relentless persevering forget it no way not beatable not a prayer set brave plucky fearless intrepid inflexible adamant heroic valiant untameable stubborn ruthless gritty obstinate mettlesome courageous pertinacious tenacious unwavering bold gutsy undaunted vigorous spunky gallant single-minded unswerving obdurate daring uncompromising manful valorous resolved rock-ribbed dedicated stouthearted gutty game unafraid purposeful audacious unhesitating fixed untiring greathearted undauntable headstrong implacable ballsy recalcitrant constant earnest committed heroical refractory lion-hearted forceful venturous wilful have-a-go unmanageable perverse steady intent unshrinking indurate hardy driven nervy insistent froward enthusiastic stiff confident contrary high-spirited defiant contumacious adventurous strenuous balky pigheaded bolshie decided self-willed ungovernable unruly stiff-necked bloody-minded dyed-in-the-wool iron-willed uncontrollable purposive hard-nosed devoted ardent wild uncooperative bulldog rigid undisciplined serious mulish unshaken restive difficult true cantankerous opinionated full of determination tireless hardheaded dashing unfearful bull-headed unbendable perseverant obstreperous patient unremitting fractious stroppy set in one's ways awkward dead set on wayward industrious unmalleable deliberate unadaptable hard-line avid zealous energetic unchanging noble keen disobedient indocile insubordinate dynamic daredevil manly faithful venturesome ossified loyal cussed adamantine untoward inconvincible hardened undeviating death-or-glory resilient hard bullheaded incompliant active intense unaccommodating strict iron pat self-opinionated four-square impavid fire-eating uncompliant unswervable passionate assiduous bent diligent settled unwearied set on bent on true-blue Herculean inexhaustible insuppressible unrestrainable unpersuadable rebellious ornery weariless fanatical undeterred chivalrous reliable frightless assertive unblenching unabashed rebel recusant diehard fierce sure trusty cross-grained spartan brassy temerarious bound eager incontrollable compulsive remorseless immutable herolike decisive pushy hell-bent ironclad assured unreasonable stubborn as a mule unswayable independent grim meaning business dogmatic opinionative pig-headed locked in contrarious as game as Ned Kelly go-ahead standing one's ground undisciplinable bound and determined argumentative bent upon self-assertive wrong-headed unsubduable immortal bravehearted uncontainable sporting direct self-disciplined firmly-based unkillable undiscouraged adventuresome dependable fervent devout redoubtable aweless straight fiery incessant unalarmed honourable macho great-spirited rigorous hidebound stringent stanch hardboiled buckled down cool blinkered unfearing orped lively brisk inalterable unalterable stable sturdy hard-working unchangeable brassbound unvacillating unmoved unbreakable heady fervid impassioned sworn tried-and-true responsible pious tried inveterate gung ho peppery gingery cocky icy sassy high-powered definite unfailing unceasing set in your ways hard and fast stern not put off not discouraged ambitious convinced reactionary traditionalist conservative urbane hairy honorable quixotic suave dignified mettled frisky sprightly out unwilling mutinous aggressive motivated with one's feet dug in with one's toes dug in deaf to reason superhuman disorderly steamroller powerhouse perky continuing plugging jumping go-go grind unstinted fireball continued hyper plodding obstinately disobedient firm in spirit perceptive vehement two-fisted sagacious keen as mustard animated tough-minded resourceful self-confident certain take charge mean ultra-conservative hard-core unprogressive deep-dyed tried and true hanging tough tried and tested intent on do-or-die determined to committed to the idea of tall in the saddle hell-bent on on one's mettle insistent on hell-bent upon hell bent on intent upon grand extravagant classic exaggerated epic renitent pervicacious inspired hungry enterprising consumed compelled obsessed turbulent violent delinquent incorrigible non-compliant elevated high-flown inflated grandiose good possessed thirsty desirous obsessive striving noncompliant resisting insubmissive radical opposing withstanding out of control champion mythological incurable long-standing eager beaver galvanized monomaniacal impelled like a loose cannon excited insurgent beside oneself badly-behaved freaked abandoned lawless fixated aspiring militant obsessional induced hopeful stand tall impulsive besetting pushed steered galvanised guided unwearying entrenched blimpish bigger than life go-getting self-starting hard-driving never-tiring insoluble thorny unpliable locked problematic knotty self-driven urged on goal-oriented dead set sedulous unsinkable painstaking fogyish stick-in-the-mud conformist tough nut hang tough imprudent forward chin-up foolhardy fortitudinous nose to grindstone stop at nothing demanding grumbly disobliging overbearing importunate pitiless irritable trying boorish finical tiresome vexed unpredictable testy hard to handle invidious choosy fiendish captious snappy sensitive ill-natured hard to please temperamental crotchety uppity touchy troublesome uptight chippy quarrelsome unamenable disputative sour oafish discontented tyrannical hypercritical picky prickly dissatisfied rude querulous bearish crabby thrawn huffy negative delicate oppressive hard to satisfy irritating fussy overcritical impolite disputatious irascible obstructive perfectionist particular fastidious over-particular finicky dictatorial critical ungracious unflappable wholehearted unmovable

stable strong sturdy solid sound durable resolute robust stalwart stout tough firm imperishable indestructible inured perdurable resilient safe dependable hardened impervious reliable secure staunch substantial bombproof hardy resistant toughened heavy-duty well-built well-made well built well constructed built to last long-lasting strongly made made to last steady steadfast fast faithful trustworthy constant trusty enduring unwavering true vigorous devoted lasting loyal established good unswerving committed fixed unfaltering sure responsible unfailing tried-and-true permanent dedicated tried and true tried and tested tried abiding invincible deep-rooted true-blue long-lived persistent hard cast-iron long-standing rugged well-founded tenacious immovable close trusted hard-wearing continuing trustable conscientious dutiful reinforced calculable honourable honorable long-term reputable attached unhesitating ardent hearty competent compelling forceful capable unyielding able-bodied devout heavy allegiant immutable hard-bitten balanced well made whole inseparable unassailable undamaged infallible dear flawless valued intact intimate loving effective steely unimpaired normal perfect airtight impregnable cherished special treasured sane unshakable unhurt fortified invulnerable well-constructed unbreakable rational persisting potent influential undecayed unblemished attested strengthened true-hearted sensible bulletproof honest patriotic rock-solid adult determined fanatical confidential genuine hale redoubtable well fortified familiar well founded well-balanced upright capable of being trusted hard-working passionate everlasting unfading strapping poised copper-bottomed able muscular athletic indomitable certain inviolable hard as nails boon uncompromising serviceable confident shellproof brick-wall undying foolproof fervent emphatic zealous extended lengthy indelible recognized powerful impassioned obdurate supportive bold unerring marathon pious down-the-line inexorable mighty cogent proven go-to indubitable fervid perfervid unflinching lusty stiff inflexible liege strict definitive rocklike important error-tolerant hulking iron husky beefy consistent composed assertive daring significant true to life on an even keel uncorrupted correct close-knit convincing bosom best thick brawny thickset forcible impeccable principled adherent keen always there energetic stark sterling recognised expedient unspoiled eatable persuasive well judged timely fresh well timed trenchant felicitous favourable seasonable valid authentic to be counted on carrying the load good as one's word well-defined well-established reasonable high-principled audacious bound steamroller unafraid nervy powerhouse impenetrable sinewy active big mature promising fit to eat well-timed uncontaminated armoured qualified efficient self-reliant discreet puissant in fine feather bound and determined dead set on hanging tough unchanging cohesive impassible knockabout unattackable concrete armored favorable definite from the horse's mouth well grounded eternal safe as houses well protected storm-resistant stormproof well defended well-protected flourishing well-armed seasoned make good make good on something in good part unchangeable level-headed perennial rigid remaining dyed-in-the-wool on one's side wholesome fit bouncing healthy well well-conditioned unshakeable prevailing old equable vibrant wide-ranging vital rigorous lifetime inveterate settled lifelong livelong lifetime's right as rain alive and kicking hanging together holding together up to snuff in the pink well balanced long-running all-time for life for all your life

inexpugnably inexpungible inextant inextensible in extent inexterminable inexpressiveness inexpressively inexpressive inexpression inexpressibly inexpressible