Synonym of unshakeable

firm resolute staunch constant fixed unassailable immovable steadfast unswerving unwavering sure absolute certain secure well-founded adamant decided deep-dyed determined dogged indefatigable indelible inflexible ingrained iron irremovable obstinate persistent relentless tireless unfaltering unflagging unflinching unrelenting unremitting unvacillating unyielding cast-iron stubborn unbending uncompromising tenacious obdurate strong-willed intransigent pertinacious single-minded set stalwart inexorable indomitable implacable persevering willful resolved unshakable spirited steady rigid indurate committed dedicated hard strong bullheaded hardened mulish headstrong strong-minded vigorous purposeful steely adamantine pigheaded stiff-necked untiring wilful self-willed perverse pat tough unshaken opinionated hard-nosed unhesitating hardheaded ossified inconvincible undeviating self-opinionated undaunted established earnest intractable rooted rock-ribbed insistent intent entrenched bound solid dead set on forceful iron-willed settled valiant inveterate stiff unmalleable dyed-in-the-wool mettlesome stout dead set true deep-rooted hard-line bold set in stone unpersuadable abiding gritty lionhearted diehard assiduous strict doughty unchangeable unchanging invincible bloody-minded immutable confirmed ineradicable plucky decisive rigorous unconquerable courageous stable deep-seated enduring strenuous enthusiastic perseverant grim fast invulnerable ruthless unalterable stout-hearted purposive bull-headed unbendable unstoppable brave unbeatable hard-core driven harsh safe deliberate stringent industrious devoted zealous energetic gutsy uncooperative refractory sturdy unappeasable spunky diligent bent on bent upon unvarying intense unflappable impregnable remorseless undefeatable bred-in-the-bone definite bent bulldog severe hard-and-fast hard and fast manful hardline keen locked in dynamic anchored do-or-die secured exacting deep patient bound and determined unsparing assertive hell-bent on hell-bent upon high-spirited faithful invariable unfailing full of determination unadaptable unfluctuating loyal long-established moored long-standing sedulous positive serious unmovable active tight incurable sustained unqualified well established through and through well-established out never-failing meaning business hanging tough brick-wall stern unwearied complete insuperable thorough emphatic thoroughgoing merciless inexhaustible incorrigible ambitious powerful braced cemented recalcitrant intrenched bulletproof insurmountable riveted contrary ardent motivated out-and-out weariless chronic habitual balky contumacious nailed unrepentant enterprising unapologetic unashamed wholehearted jammed four-square focused unswervable eager compulsive assured impassable true blue static immobile consistent fastened card-carrying unmoving die-hard focussed through-and-through stubborn as a mule hell bent on indestructible unsurpassable cruel inbred draconian utter Herculean profound basic fundamental taut pitiless authoritarian incessant fearless sound bolshie built-in radical inbuilt stationary motionless intrepid unforgiving confident cussed full-bore hungry restive importunate incommutable inalterable embedded unwearying inviolable avid cantankerous tied permanent subconscious lingering inherent innate long-lasting dauntless brassbound seasoned thirsty desirous undeterred convinced right-down arrant inspired fanatical obsessive feisty longtime perky jumping grind hyper never-tiring froward even uniform unpermissive ironclad unattackable fierce aspiring unswayable fortified pushy uncompliant undismayed defiant iron-fisted changeless irrepressible untouchable militant unmodifiable supreme invariant irreversible persisting regular unabated instilled cocksure incompliant infixed explicit mad keen heavy-handed cross-grained hell-bent full-fledged deep-down hard-driving go-getting self-starting mean business keen as mustard not giving an inch eager beaver stand pat dug in goal-oriented deeply ingrained self-assertive tough nut to crack intent on self-driven set on determined to committed to the idea of pig-headed deep-set on one's mettle insistent on solid as a rock stop at nothing out and out set firm clinging self-disciplined implanted unaccommodating direct firmly-based unfading unshrinking unbudgeable independent dour oppressive hopeless endemic straight trusty reliable forbidding disciplinary illiberal ornery immoveable unblinking gut instinctive intrinsic dependable uptight picky balanced narrow-minded resistant unquestioning awkward unintimidated impassive undiscouraged impenetrable cohesive stiffened stabile still puritanical unsinkable painstaking unstinting hard-working stony-hearted unimpressionable standing pat undying eternal beyond hope pounding mortal hard-headed coherent renitent unmanageable unshaking quiescent austere insusceptible stuffy possessive unforgetful immalleable durable unreasonable driven in unsurmountable going all the way exact concrete difficult stroppy iron-jawed telelogical calculated impervious immune insensitive ramrod perennial lifelong devout unmoved unbreakable dogmatic heady opinionative no-nonsense on the go ball of fire be out for blood playing hard ball nose to the grindstone not put off not discouraged tough nut dyed-in-the wool proved fervent vehement contrarious stony nose to grindstone tall in the saddle intent upon clear-sighted all out stick to guns flat-out set in concrete straight out heroic untameable fiery torrid irredeemable unreformable impenitent unceasing unimpressible fixed firmly writ in stone cut-and-dried strait-laced decided upon set in one's ways uncompassionate impertinent hardhearted bullhead unemotional mean staid accustomed inured habituated irresistible with one's feet dug in with one's toes dug in deaf to reason wrong-headed done up buttoned down sicker continuing plugging go-go unstinted fireball continued plodding aggressive competitive cold fish proof against persuasion persuaded proof against red-hot hard-shell all-consuming firmly established bona fide satisfied clear cutthroat ferocious unplacatable unmollifiable inescapable iron-handed unpacifiable progressive bloodthirsty pioneering safe and sound nailed down set fast immobilized unmoveable immobilised stuck down consumed compelled obsessed warlike gladiatorial brutal scrappy conclusive doubtless possessed striving whole-hearted ineluctable self-asserting sanguine implicit galvanized monomaniacal impelled in earnest determinate dominant hang-tough full-blooded intensely competitive high-pressure go for broke in-your-face self-seeking self-assured can-do fiercely competitive power-loving gung ho get up and go high-reaching power-hungry having killer instinct self-possessed self-confident cut-throat dog-eat-dog necessary compulsory prevailing inexpugnable domineering fixated obsessional induced going in no doubt clear in your mind free from doubt impulsive besetting pushed steered galvanised guided inborn longstanding hang tough perpetual no going back like death and taxes urged on sacrosanct ageless deep down deeply felt lasting unvaried unchanged genuine congenital lodged in one's brain robust rugged categorical fixed as the laws of the Medes and Persians to the core wedged snug lusty welded bombproof mounted bolted screwed frozen substantial tightened lodged soldered stuck rebellious disobedient insubordinate obstreperous wayward ungovernable untoward continuous continual uncontrollable unabating unruly unsympathetic extreme ceaseless rebel recusant fractious hardy mutinous thrawn unflexible everlasting demanding obstructive rough recurrent unfeeling wild impliable endless inelastic unending flinty disobliging hard as nails callous undisciplined unhelpful toughened imperious winner-take-all zero-sum hard-hearted heavy-duty dire hearty truculent unbroken unmitigated routine recurring long-lived ever-present usual heartless unamenable uninterrupted protracted nonstop unrelieved interminable resilient burning imperishable non-stop heavy rowdy all-or-nothing win-or-lose incontrollable compact hard-wearing resisting non-flexible rock-solid pressing troublesome grave never-ending indocile formidable uncharitable armoured hard-boiled standing one's ground armored two-fisted hard-bitten quarrelsome opposing reinforced inconsiderate haughty shatterproof urgent unresponsive mule adverse cold excessive unfavorable unfavourable game noncompliant important non-breakable running infrangible unmerciful tense disorderly locked granite immoderate exigent imperative brittle aloof prolonged incorruptible unfriendly tiresome ungiving uncaring round-the-clock indissoluble lawless solidified unsupple trying hard-hitting resistive hidebound drastic critical clamant crying acute unpliable problematic disputatious turbulent as stubborn as a mule unpredictable haunting jelled unpleasant high-powered final heedless reckless riotous rude irritating violent impetuous intemperate imprudent drunken rash forward bawdy astringent out of control ill-natured out of line hard to please stiff as a board well-built well-set well-made made to last tyrannical pass-fail high stakes high-stake contentious exasperating mullish estranged seditious disaffected factious insurgent irreconcilable alienated non-compliant petrified nonflexible reactionary traditionalist conservative long-drawn-out unreceptive boneheaded conscientious gallant starched day-and-night great blinkered fossilized bony indurated rigidified proud pervicacious perseverative unwilling ultra-conservative unprogressive valorous sharp passionate hardworking hellbent challenging ballsy unsupportive neverending dangerous dragging slow nasty crisp doctrinaire flat fossilised laborious complicated biased insubmissive peevish cross petulant obscene pornographic X-rated abrasive unjust unfair alarming undefeated preconceived with a will of one's own determined to have one's own way inextinguishable immortal sagacious remaining true-blue boisterous set in your ways locked-in formal set-on one-sided thick-skinned disruptive anarchic scrupulous systematic meticulous do or die hold one's ground hold the fort hold the line blimpish insoluble thorny knotty unkind sticky numbed annealed disciplinarian ascetical by the book browbeating ascetic autocratic as game as Ned Kelly rocklike attention-seeking chaotic troublemaking solemn manly greathearted gutty stouthearted unafraid undauntable heroical unwaivering sticking to one's guns drawn-out spun-out unpitying firm in spirit perceptive animated tough-minded resourceful take charge unrestrained reserved fit nonperishable deathless inextensible inductile savage curt lion-hearted unobliging unsentimental romping noisy anarchical rumbustious lawbreaking lively rollicking loud punishing unsmiling chilly frigid icy frosty cynical never give up fogyish stick-in-the-mud conformist cool distant lacking compassion vindictive inhuman uncivil discourteous nonstretchable out of hand louring gruff red-blooded pushful peremptory not cooperative disagreeable remote lowering intimidating desperate pugnacious triumphant tough as old boots rocky as tough as old boots with a heart of stone nonmoving resounding reiterative monotonous non-stretchable unamiable uncongenial mighty sombre somber ungentle cold-blooded cold-hearted chiseled chiselled unbudging irrefragable nonbreaking unwreckable undestroyable inextirpable inexterminable undestructable unruinable irrefrangible nonmotile mean-looking potent hard-shelled nonbreakable influential well-armed strengthened airtight storm-resistant well protected flourishing stormproof tried-and-true knockabout well fortified well defended well-protected impassible untimely unfortunate immotile overbearing fussy unbowed gripping tormenting neurotic consuming unquenchable bitter furious significant inconvenient inopportune perdurable brass-bound irritable vexed testy choosy captious snappy temperamental chippy disputative oafish hypercritical prickly querulous bearish huffy negative delicate overcritical irascible particular fastidious over-particular dictatorial ungracious grumbly boorish finical hard to handle invidious fiendish sensitive crotchety uppity touchy sour discontented dissatisfied crabby argumentative hard to satisfy impolite perfectionist finicky forcible dominating unexpected unanticipated ill-timed stark strapping addictive fanatic controlling surprising unforeseen annoying disastrous unusual unpredicted mistimed hale athletic sinewy capable muscular big able staying dateless oft-repeated repetitive timeless consecutive repeated around-the-clock unalleviated ongoing connected unwaning aeonian frequent pathological wackadoodle wackadoo puissant crucial compelling vital in fine feather able-bodied unwelcome infelicitous inapt unsuitable inappropriate unlucky inauspicious quiet hitched hooked situated attached located preoccupied infatuated without respite high-priority made fast vexatious malapropos badly timed inimical unseasonable constraining instant pivotal emergent necessitous key misfortunate disturbing hapless luckless unpropitious ill-starred star-crossed essential clamouring persuasive clamoring requiring distressing of the utmost importance of the essence hurry-up immediate obliging heat-on now or never claiming forcing

solid dependable firm reliable stable steadfast strong trustworthy committed durable enduring immutable secure unchangeable unfailing fixed rigid sturdy true established faithful tried constant responsible stout lasting resolute sure balanced permanent stalwart staunch equable trustable unwavering settled sound steady bulletproof calculable honorable honourable perdurable trusty unfaltering long-lasting long-lived long-standing well balanced well-balanced well-built deep-rooted safe good tried-and-true loyal unswerving tried and true tried and tested honest certain reputable determined true-blue upright infallible consistent proven devoted dedicated never-failing conscientious righteous mature confident fail-safe unimpeachable straight tested always there safe as houses fast attested proved unerring recognized approved certified trusted unhesitating predictable decent sensible go-to recognised virtuous ethical foolproof tried and trusted truthful surefire can't-miss sincere true-hearted absolute abiding continuing high-principled guaranteed sure-fire right positive to be counted on unshakable up front rock solid decided resolved ended sterling creditworthy clutch bold long-term straightforward credible likely to perform poised composed assertive extended lengthy competent rocklike copper-bottomed vigorous assured marathon classic demonstrated failsafe impeccable respectable decisive used incorrupt unequivocal careful veracious redoubtable carrying the load good as one's word tried out put to the test time-honoured definite pure dutiful just pious moral nice devout stanch daring hard-working conclusive unanxious undoubtful sanguine carefree able hopeful supportive right-minded endless boundless indomitable ardent worthy truehearted veridical allegiant down-the-line undistorted liege confirmed estimable scrupulous creditable square wholehearted all right easy well-founded shoo-in inexhaustible incorruptible principled bound and determined audacious bound forceful steamroller unafraid resilient tough tenacious dead set on nervy hanging tough powerhouse no lie on the up and up ceaseless continuous nailed down locked on saintly persistent unlimited unfading undying continual fly right to be trusted level-headed straight-up worthy of trust above suspicion true blue boy scout down home on the level full of integrity as good as one's word in the bag unflagging bottomless diligent same unrelenting unchanging assiduous dyed-in-the-wool delivering there come-through eternal invariable counted on efficacious unbeatable effective handy agreeable effectual watertight acceptable correct satisfactory helpful authoritative useful inerrant undeceivable unquestionable exact always effective efficient omniscient apodictic incontrovertible never failing inerrable satisfying

wholehearted complete committed emphatic absolute categorical full genuine real total true unambiguous unqualified unreserved unstinting determined earnest enthusiastic fervent hearty positive sincere solid staunch thorough unconditional undivided unequivocal unflinching unlimited unmitigated unrestricted zealous dedicated devoted steadfast steady sure unadulterated unalloyed unfaltering unswerving unwavering utter ardent enduring heartfelt outright serious stalwart thoroughgoing undiluted unfeigned unquestioning warm abiding authentic constant entire fullhearted impassioned loyal passionate whole-hearted bona fide hundred percent whole-souled never-failing out-and-out without reservations firm perfect unhesitating sheer fixed unshaken consummate unshakable implicit virtual accurate hidden unquestioned inferential unuttered inarticulate embedded inevitable practical definite implicative constructive intrinsic contained downright arrant deep-dyed unvarnished pure rank categoric profound explicit express regular simple stark clear fair plumb dead flat very dreadful bodacious crashing deadly blank clean stone blooming certain straight-out flat-out all-out cotton-picking no catch through and through without reservation no ifs ands or buts gushing effusive infernal confounded blasted unrestrained blessed resounding direct forthright wholesale definitive decisive conclusive uncompromising whole unquestionable indubitable overt ultimate final assured right unconstrained open apodictic extreme unmistakable specific plenary actual determinate wide point-blank clear-cut straight out all out no strings no strings attached right-down in every respect no holds barred no fine print one hundred per cent no kicker full-bore

hopeless irremediable incurable incorrigible irredeemable irreparable irreversible lost irrecoverable irreformable irretrievable unrecoverable unredeemable unwavering helpless irrevocable remediless unchangeable uncorrectable uncurable unfixable cureless fatal fruitless gone grave permanent serious terminal beyond recovery beyond remedy beyond repair despaired of past cure past remedy beyond hope beyond recall ill-fated past hope inveterate impossible confirmed unsalvageable chronic persistent hardened long-standing habitual dyed-in-the-wool unrepentant unashamed severe lasting complete irreclaimable written off futile obsessive unreformable addicted long-established established diehard compulsive obsessional pathological committed deep-dyed doomed past mending useless unapologetic thoroughgoing thorough utter bad absolute beyond cure unrectifiable unrestorable unrepairable unalterable final lost and gone regular seasoned addictive shameless dependent uncontrollable hooked gone forever deadly unmitigable mortal nowhere to go out of time congenital fallen sad worsening unreclaimable irremedial broken ruined destroyed irreplaceable beyond redress unsavable unregainable cursed wretched no-win up the creek accursed desperate given up gone for ever condemned failed afflicted excommunicated vulnerable past praying for aimless blighted alone pointless losing intractable wasted bleak profitless forlorn unprofitable entrenched unreformed uncontrite hard-core impenitent out-and-out deep-rooted hollow ineffectual unachievable ineffective worthless firm devoted loyal unswerving staunch faithful dedicated steadfast abandoned beastly beyond redemption loser wicked recidivous true blue unfaltering full-bore through and through right-down card-carrying arrant irrepressible eternal undying mad keen dyed-in-the wool keen as mustard bred-in-the-bone ingrained obdurate fixed remorseless ineradicable unregenerate unremorseful unrepenting deep-seated unabashed unblushing brazen conscienceless set accustomed obstinate constant true uncompromising recurrent die-hard well-established reprobate incessant frequent callous defiant relentless through-and-through driven infixed full-fledged instilled deep-down genuine irresistible hardhearted recidivistic deeply ingrained impulsive by habit to the core out and out without regret without remorse prevalent recurring besetting not contrite rooted settled deep perennial lifelong intrenched devout resolute enduring ardent proved fervent earnest vehement immutable stalwart indelible unyielding wholehearted fiery torrid unshakable fanatical intransigent longtime supreme stubborn zealous inexorable definite explicit staid inured habituated sicker bona fide hard-line all-consuming firmly established well established deep-set red-hot hard-shell

unshakeable belief unshakeable in one's belief unshakeably unshaken unshaken in one's belief unshakenly unshakably unshakable unshackling unshackles unshackled unshackle