Synonym of compulsory

Synonym: compelled, necessary, required,

Antonym: convex, elective, optional, voluntary,

mandatory obligatory required forced imperative requisite enforced statutory binding incumbent contractual demanded enforceable necessary peremptory prescribed stipulated compulsatory nonelective unavoidable essential inescapable involuntary set de rigueur imposed coerced compelled exacted ordained dictated constrained unwilling necessitated coercive compelling urgent forcible curricular OB imperious the law unconsenting slave reluctant grudging conscripted obliged impelled begrudging pressed invoked charged enjoined executed advocated sanctioned established kept prevalent prerequisite will-less against one's will against one's wishes unalterable indissoluble irrevocable commanding irremissible needful fixed needed indispensable integral necessitous carried out forced upon unbreakable conclusive called-for permanent called for must-have bounden incumbent on counted upon

essential crucial important necessary key requisite vital indispensable needed required called for imperative critical mandatory obligatory paramount compelling urgent integral pressing high-priority acute of the essence pivotal fundamental substantive all-important burning central consequential significant vitally important life-and-death of great consequence of the utmost importance pre-eminent prerequisite all important must-have necessitous needful basic de rigueur quintessential principal prime chief demanded cardinal recommended desired prescribed wanted intrinsic stipulated core incumbent inherent forced peremptory nonelective primary rudimentary expedient involuntary elementary innate specified compulsatory set lacking basal king foremost called-for telling lacked preeminent number one everything very important statutory assigned unavoidable enforced major characteristic focal structural imposed staple natural underlying rudimental profound foundational constitutional elemental constituent salient constitutive connected component at the heart of appropriate binding decisive momentous preferred exigent bottom-line proper meat-and-potatoes incumbent on name of game serious weighty grave far-reaching considerable substantial severe portentous of consequence earnest heavyweight solemn meaningful of moment heavy somber sombre sober of great import no joke of great importance life and death no laughing matter of significance big sedate staid earth-shattering humourless humorless no-nonsense big deal material underlined monumental historic heavy-duty fateful eventful main capital determining appreciable determinative uncomic leading deciding sizable world-shaking life-or-death influential noteworthy great large-scale exceptional intense hefty impactful big league nitty-gritty radical dire mission-critical business-critical drastic dangerous notable much needed apocalyptic climacteric large instrumental strategic overriding landmark ponderous valuable epoch-making prominent pronounced tough powerful difficult imposing of vital importance grand earth-shaking world-shattering outstanding especial striking mighty almighty egregious rare major league conclusive high-level big-time life-changing deep hard major-league earthshaking right-hand inescapable dominant name-of-the-game fatal overruling primal premier predominant overwhelming coal-and-ice climactic supreme top ruling master glum stern a matter of life and death massive gloomy dour grim austere now or never extremely important life-saving life or death of great moment downbeat cold sober quiet matter of life and death sad pertinent sweeping desperate perilous clamant priceless crying terrible emergent importunate hazardous precious imperious awful pointed immediate top-priority worthwhile precarious inestimable instant irreplaceable dreadful top-level overshadowing of concern high-profile of note grievous big-league extraordinary parlous helpful choice alarming serviceable extremely helpful invaluable beyond price extremely useful worth its weight in gold treasured sensational glaring much strong distinctive headline front-page noticeable preponderant extensive obvious signal unusual extreme resonant remarkable unordinary special ponderable forceful potent memorable newsworthy unforgettable glorious conspicuous marked keynote particular worthy of attention carrying a lot of weight emphatic quantum uncommon generous impressive milestone bad sudden life-threatening afflictive super ill-fated direful doomful tectonic super colossal unlucky inauspicious ominous eminent mammoth resultful most important

unavoidable certain ineluctable inescapable inevitable necessary sure fated ineludible inexorable obligatory assured unpreventable mandatory predestined predetermined preordained required unescapable impending inevasible manifest obvious prescribed set bound to happen for sure sure to happen in the bag in the cards locked up open and shut ineliminable imminent destined doomed patent definite undoubted routine repeated robot-like usual regular automatic predictable settled expected fixed foreseeable decreed ordained reliable guaranteed undeniable impreventable fateful unalterable unfailing decided foreordained natural effective irrevocable binding dependable determined irresistible without recourse all locked up to be anticipated to be expected for certain no ifs ands or buts certain to happen meant clear intended pre-elected determinist returnless infallible inerrant deterministic prophesied prophesized doubtless predicted out of one's hands predestinated prejudged all sewn up meant to be nailed-on mapped out in advance prearranged bound decided by fate in the stars appointed undodgeable overpowering compelling overwhelming uncontrollable potent compulsive urgent irrepressible forceful ungovernable imperative driving besetting obsessive oppressive overmastering

regulation fixed official prescribed required set acceptable appropriate conventional correct fitting mandatory normal obligatory proper standard customary usual orthodox ubiquitous done necessary au fait right socially obligatory a must conforming to accepted standards de rigueur comme il faut called for accustomed regular common classic traditional classical habitual routine popular accepted prescriptive time-honored time-honoured tried and true tried and tested acknowledged traditionary universal proven ritual wonted sanctioned stereotyped ritualistic immemorial doctrinal widespread widely used abiding immortal enduring ageless lasting timeless memorable unforgettable undying deathless undistinguished staid ceremonial unadventurous conformist run-of-the-mill taken for granted rooted recognized approved agreed received confirmed established prevailing authorized general typical settled expected endorsed understood stock admitted familiar household prevalent predominant going mainstream ordinary fashionable touted current preferred everyday plain legit unopposed okayed recognised authorised passed long-established well worn agreed upon bog-standard well-known in vogue arrived at

undeniable certain incontestable incontrovertible indisputable indubitable irrefutable sure unquestionable undebatable clear conclusive evident inarguable manifest obvious patent positive proven unassailable watertight clear-cut irrefragable plain straightforward transparent unmistakable accomplished beyond question categorical definite emphatic express marked pronounced self-evident sound unanswerable unarguable unchallengeable undoubted unequivocal actual apodictic binding compelling necessary obligatory real true beyond doubt beyond a shadow of a doubt for sure sure thing as plain as a pikestaff open and shut staring one in the face no ifs and or buts absolute unambiguous genuine convincing final decisive authoritative demonstrable firm definitive confirmed beyond dispute guaranteed assured reliable verifiable hard undisputable palpable fixed airtight accurate authentic infallible factual not in doubt set valid established concrete provable unerring decided establishable safe confirmable acknowledged veritable forceful predestined destined uncontested telling accepted in the bag undisputed nailed-on flawless effective demonstrative known ascertained unquestioned supreme unqualified unconditional determined persuasive verified tangible foolproof unchallenged recognized dependable having down pat bona fide clinching ultimate trustworthy downright doubtless unfailing uncontroversial settled not in question well-founded substantial recognised precise salted away on ice existent strong cogent credible complete plausible outright inescapable undoubtable perfect impregnable pure sheer observable solid unimpeachable irresistible cold attested sure-fire determinate inevitable certified realistic without loopholes irrevocable as sure as eggs is eggs substantiated sure-enough total convinced confident very weighty unfaltering satisfied unwavering persuaded steadfast no ifs ands or buts undoubting unshakable without doubt de facto faultless powerful unquestioning free from doubt thorough flat apparent resolute double-checked exact secure questionless implicit flat-out well grounded surefire hands-down essential substantive unavoidable ineluctable no mistake consummate inexorable determinative last deciding fated imminent ineludible for certain preordained unpreventable predictable predetermined unescapable inerrant natural impending dinkum peremptory impreventable unalterable foreordained doomed inevasible authenticated sure to happen to be expected bound to happen in the cards literal to be anticipated demonstrated certifiable inalienable immutable tyrannous admitted dogmatic arbitrary inoppugnable overpowering material freely admitted not disputed unbreakable safe to say unvarnished uncontestable unequivocable open-and-shut invincible enduring unshaken uncompromising abiding constant changeless never-failing unchanging steady unchangeable for a fact unvarying bare open nailed down exhaustive invulnerable rational prominent pat superior well-grounded impressive authenticating reasoned reasonable uncontradicted right fair unalloyed failsafe irrebuttable overwhelming ironclad odds-on apodeictic veridical unfabled inexpugnable stable frozen sealed hard-and-fast potent no two ways about it validating well-proven down pat returnless stone cold satisfying efficacious imperative irreversible commanding that's a fact tacit fail-safe intrinsic influential beyond a doubt faithful sober beyond the shadow of a doubt can't-miss virtual implied can bet on it unappealable beyond a shadow of doubt compulsive insistent trusty determinant revealing settling resolving irrefrangible unacknowledged nof ifs ands or buts especial legitimate perceptible self-assured specific self-conceited self-confident unhesitating there are no two ways about it well reasoned believable real-life objective real-world validated proper litmus test all out straight out no ifs ands or buts about it corroborated resounding rank affirmative all sewn up existing unimaginary documented logical serious unmitigated truthful considerable out-and-out cocksure thoroughgoing explicit direct forcible honest physical regular utter good what you see is what you get kosher one hundred per cent significant unadulterated unreserved whole unabridged fundamental honest to God honest-to-goodness sure enough real live non-fictional for real utmost unrelieved rightly so called foreseeable expected decreed ordained fateful required prescribed mandatory ineliminable without recourse all locked up certain to happen

forcible compelling strong effective powerful cogent forceful impressive potent valid convincing weighty persuasive telling active armed efficacious efficient influential mighty plausible violent aggressive coercive conclusive credible drastic eloquent energetic unanswerable assertive intense militant puissant vehement vigorous authoritative effectual decisive sound satisfying irresistible striking dynamic logical meaningful moving lucid well-founded inducing significant incisive solid reasoned clear trenchant reasonable satisfactory coherent rational urgent suasive convictive relevant considerable crucial great momentous consequential pertinent inspiring touching pithy operative impelling punchy successful controlling robust swaying enticing alluring stringent seductive stimulating hard-hitting material emphatic revealing marked important conspicuous devastating constraining virile elemental take-over steamroller coming on strong titanic punch take-charge ball of fire gutsy electric powerhouse enthusiastic animated vivacious zestful dramatic passionate winning inspirational pivotal graphic vivid motivating instrumental stirring rousing zappy in-your-face silky glib slick smooth-tongued silver-tongued smooth-talking competent fateful provocative swayful formative guiding monumental impactful useful capable central responsible contributory encouraging masterful motivational able critical affecting purposeful imposing far-reaching animating unmistakable clear-cut sharp pointed inveigling suasory unctuous actuating believable assuasive luring smooth wheedling succinct terse firm indubitable enterprising driving well-established categorical intelligent assured go-getting go-ahead decided undisputed well-defined obvious infallible formidable ingenious insightful unequivocal incontestable unambiguous crystalline definitive distinct not taking no for an answer intuitive evident high-octane fast-track forced intimidating tough strong-arm bullying compulsive orderly systematic articulate methodical pushing pushy driven ambitious commanding go-go supreme authoritarian dominant ruling apt justified apposite well-grounded consistent well reasoned fitting high-powered well organized highly capable in control full of get-up-and-go in the saddle

inexorable adamant implacable immovable inflexible relentless severe unbending unyielding cruel hard harsh obdurate unrelenting intransigent unappeasable determined merciless pitiless remorseless uncompromising unshakeable unswerving unwavering inescapable iron-handed strict unforgiving unmollifiable unpacifiable unplacatable unsparing draconian exacting rigorous ruthless stringent tough indurate ineluctable adamantine bound dogged immobile ironclad necessary obstinate resolute rigid single-minded stubborn unchangeable unmovable locked in mean business bound and determined dead set on hell bent on no going back set in stone like death and taxes

destined fated certain foreordained ordained bound doomed meant predestined preordained predetermined assured designed foredoomed guaranteed intended sure brewing closed coming compelled condemned directed forthcoming impending ineluctable inescapable inevitable inexorable instant looming menacing near overhanging predesigned sealed settled stated threatening unavoidable very likely in the wind nailed on at hand hanging over in prospect in store in the air to come in the cards que sera sera that will be written in the cards that is to be way the ball bounces expected imminent ineludible unescapable anticipated planned unpreventable necessary required sure to happen bound to happen in the bag set predictable proposed calculated scheduled determined prospective future prearranged pre-elected fixed predicted ineliminable in the offing slated envisioned advised automatic mandatory natural undeniable impreventable unalterable promised projected due clear inevasible targeted arranged to be anticipated to be expected hoped-for asked for pinned counted on wished-for determinist foreseen deterministic prophesied prophesized predestinated prejudged meant to be obvious patent manifest appointed returnless infallible inerrant mapped out in advance definite trusted out of one's hands all sewn up doubtless nailed-on decided by fate in the stars next likely to be assured of doing something approaching ultimate nearing upcoming up and coming oncoming just around the corner in the course of time advancing pending close awaited proximate unfolding in preparation close at hand resulting on us supplied on the horizon on the way about to happen in the pipeline on the cards purposed foreseeable decreed reliable obligatory fateful prescribed unfailing decided irrevocable effective binding dependable irresistible agreed without recourse all locked up for sure for certain no ifs ands or buts certain to happen open and shut preset pre-agreed pre-planned pre-decided preplanned pre-established cut and dried set up programmed encoded established in advance premeditated foredestined arranged in advance precogitated forethought decided beforehand deliberate

imperious dictatorial domineering bossy overbearing authoritative commanding peremptory authoritarian high-handed arrogant lordly overweening autocratic imperial tyrannical despotic haughty tyrannous arbitrary assertive autocratical bullish dominating forceful magisterial masterful officious tyrannic wilful willful pushful pushy compulsatory exacting mandatory obligatory oppressive required high and mighty throwing one's weight around harsh severe dogmatic absolute draconian strict autarchic totalitarian anti-democratic repressive imperative undemocratic firm rigid monocratic unyielding czarist tsarist doctrinaire demanding iron-handed illiberal inflexible imposing iron-fisted heavy-handed controlling coercive stern egotistic confident pompous tough summary insistent dominant disciplinarian cruel cocky uncompromising rigorous absolutist stringent ruthless self-confident merciless hard lofty powerful supercilious superior proud bullying brutal unlimited one-party stuffy emphatic subjugating unjust insolent regnant decisive compelling Neronian uncontrolled inhuman autarchical obstinate ironhanded mean unsparing hard-line unbending solid pitiless stiff rough inexorable relentless self-assured all-powerful self-willed ordering aggressive bidding masterly assured impressive unaccountable unconstitutional single-party fascistic overpowering strong-willed unreasonable unrestrained patronizing overconfident dystopian sure of oneself autonomous pushing driving czarlike throwing one's weight about downright brusque crack the whip in driver's seat on high horse dogmatical august patronising judicial stately majestic highhanded dignified regal pontifical overproud cocksure presumptuous abrupt strong brisk unassailable no joke flat-out straight out clamorous dictative crack-the-whip opinionated lording it positive preponderant snotty high-and-mighty uppity ascendant prevalent cavalier disdainful sniffy intolerant absolutistic in charge cast-iron brassbound decided not backward in coming forward definite fixed certain undeniable finished no ifs ands or buts throwing weight around hard to please classic classical definitive judgelike judge-like heavy overwhelming burdensome crushing fierce murderous trying onerous excruciating bitter unfair hardhanded punitive rugged grim searing grievous hardheaded uncharitable single-minded dour intractable by the book unrelenting resolved dyed-in-the-wool dogged hardhearted hard-nosed obdurate browbeating mulish callous hardened extreme ossified formidable hard-core stiff-necked hard-hearted austere ascetic steadfast determined unflinching drastic pressing unsympathetic dire unforgiving astringent no-nonsense resolute ascetical disciplinary immovable grave bullheaded disheartening gloomy backbreaking discouraging weighty sombre hefty dismal depressive troubling dispiriting superincumbent bleak worrying distressing troublesome stressful exigent somber taxing depressing confining headache rough going

hard-and-fast certain determinate final firm fixed flat frozen hard inexpugnable set settled stable absolute binding conclusive decisive dictated exacting irrevocable mandatory strict unbending written carved in stone set in concrete definite unequivocal explicit unambiguous decided definitive clear precise specific unmistakable manifest clear-cut cut and dried black and white hard and fast positive indubitable express distinct known categorical evident obvious patent transparent palpable open-and-shut black-and-white cut-and-dried well-defined crystal clear plain sure unquestionable irrefutable incontrovertible defined indisputable undoubted unarguable ultimate unambivalent straightforward nonambiguous unquestioned undisputed recognized unchallengeable unanswerable stark univocal lucid recognised sharp crisp ringing pronounced sharply defined pegged rooted luculent pellucid barefaced apparent perspicuous bald luminous detailed comprehensive striking broad well defined lucent crystalline marked bald-faced bright-line exact understandable unblurred spelled out clearly expressed determined established specified quantified irreversible limited unchangeable indelible unrectifiable determinative permanent peremptory irremediable invariable finished changeless immutable lasting emphatic unalterable unreversible unrepealable unappealable clear cut guaranteed concrete intent determining proven assured convinced confident well-marked undubitable well-grounded silhouetted stated forthright clean-cut clearly defined distinguishable graphic incisive noteworthy severe audible visible bold significant as plain as the nose on your face not vague full vivid tangible minute as plain as daylight cut and dry res ipsa loquitur undeniable incontestable ascertained true inarguable confirmed beyond doubt irrefragable unchallenged accomplished sealed accepted beyond question acknowledged uncontested nailed-on not in question not in doubt supreme provable confirmable authoritative establishable real safe verifiable genuine demonstrable sure thing having down pat as sure as eggs is eggs there are no two ways about it all sewn up

compulsory acquisition compulsory law compulsory marriage compulsory purchase compulsory reading compunction compulsoriness compulsorily compulsive talker compulsive shopping compulsive shopper compulsively