Synonyms for Improbable:

• adj.

  •all (adjective)
  • improbable.
  •dubious (adjective)
  • in decisive,
  • more unconvinced,
  • un dependable,
  • un-sure,
  • un assured,
  • un-trustiest,
  • touch go,
  • un decided,
  • un reliable,
  • un clear,
  • untrustier,
  • un-trustworthy,
  • un-clearer,
  • un trustier,
  • un-assured,
  • more unassured,
  • un trusty,
  • fly by night,
  • un-dependable,
  • untrustiest,
  • un-reliable,
  • un-clearest,
  • un-decided,
  • un-clear,
  • in-decisive,
  • un-trustier,
  • un sure,
  • most unassured,
  • un-trusty,
  • un-convinced,
  • Mootable,
  • most unconvinced,
  • un convinced,
  • most trustless,
  • un trustiest,
  • un trustworthy,
  • un clearest,
  • more trustless,
  • un clearer,
  • dubitable.
  •far-fetched (adjective)
  • in consequential,
  • far fetched,
  • in-coherent,
  • illogical,
  • in coherent,
  • un-natural,
  • in-consequential,
  • un-convincing,
  • un convincing,
  • hard swallow.
  •fishy (adjective)
  • most doubtable,
  • more doubtable,
  • funnier.
  •flimsy (adjective)
  • most ungrounded,
  • in-adequate,
  • trans-parent,
  • trivial,
  • un-satisfactory,
  • un-reasonable,
  • un-persuasive,
  • un persuasive,
  • more unpersuasive,
  • un-grounded,
  • in adequate,
  • more ungrounded,
  • un grounded,
  • most controvertible,
  • more controvertible,
  • un reasonable,
  • trans parent,
  • lamest,
  • un-substantial,
  • most unpersuasive,
  • un substantial,
  • trifling,
  • un satisfactory.
  •implausible (adjective)
  • re-achier,
  • for birds,
  • full holes,
  • reachiest,
  • wont hold water,
  • re achy,
  • re-achiest,
  • reachier,
  • full of holes,
  • re achiest,
  • wont wash,
  • re-achy,
  • re achier.
  •impractical/impracticable (adjective)
  • more unbusinesslike,
  • un-serviceable,
  • out question,
  • in-feasible,
  • wont fly,
  • in efficacious,
  • more no go,
  • most unbusinesslike,
  • un wisest,
  • most ivory tower,
  • more nonviable,
  • un-wise,
  • most infeasible,
  • more irrealizable,
  • in feasible,
  • not prayer,
  • in-efficacious,
  • more ivory-tower,
  • ivorytower,
  • more infeasible,
  • non-viable,
  • un wiser,
  • most nonviable,
  • most ivorytower,
  • most ivory-tower,
  • in operable,
  • most nogo,
  • in-operable,
  • un wise,
  • in-applicable,
  • most no-go,
  • un-real,
  • most inoperable,
  • un businesslike,
  • irrealizable,
  • un-attainable,
  • out the question,
  • non viable,
  • more nonfunctional,
  • more inoperable,
  • more unserviceable,
  • non functional,
  • un attainable,
  • un-wisest,
  • un-feasible,
  • most nonfunctional,
  • more ivorytower,
  • un-wiser,
  • infeasible,
  • most unserviceable,
  • un serviceable,
  • un-businesslike,
  • un feasible,
  • most irrealizable,
  • more no-go,
  • more impracticable,
  • more nogo,
  • most no go,
  • in applicable,
  • more ivory tower.
  •inconceivable (adjective)
  • in-supposable,
  • in cogitable,
  • more imcomprehensible,
  • unheard-of,
  • un-knowable,
  • un knowable,
  • most unknowable,
  • more insupposable,
  • in-cogitable,
  • most insupposable,
  • imcomprehensible,
  • in supposable,
  • more incogitable,
  • in-conceivable,
  • in conceivable,
  • more unknowable,
  • mindboggling,
  • extra-ordinary,
  • unheardof,
  • mind boggling,
  • most incogitable,
  • staggering,
  • most imcomprehensible.
  •incredible (adjective)
  • in-credible,
  • un tenable,
  • in credible,
  • un-tenable.
  •legendary (adjective)
  • more unhistorical,
  • more handed-down,
  • most handed-down,
  • most figmental,
  • more handeddown,
  • un-verifiable,
  • in vented,
  • most handeddown,
  • un historical,
  • Told,
  • most unhistorical,
  • more told,
  • un-historical,
  • most told,
  • most fabricated,
  • most handed down,
  • un historic,
  • handeddown,
  • more unhistoric,
  • most unverifiable,
  • more figmental,
  • more handed down,
  • un-historic,
  • most unhistoric,
  • most created,
  • un verifiable,
  • more unverifiable,
  • in-vented,
  • more fabricated,
  • re-lated,
  • more created.
  •marvelous (adjective)
  • un-usual,
  • be-wildering,
  • awe inspiring,
  • super natural,
  • un usual,
  • be wildering,
  • aweinspiring,
  • most confounding,
  • in comprehensible,
  • more confounding,
  • most bewildering,
  • difficult believe,
  • sur prising,
  • sur-prising,
  • super-natural,
  • more bewildering.
  •not likely (adjective)
  • rare,
  • hundred-to-one,
  • slim,
  • not expected,
  • slim and none,
  • fanciful.
  •Other relevant words: (adjective)
  • Unapt,
  • unassured,
  • unheard of,
  • unserviceable,
  • unthinkable,
  • thin,
  • not applicable,
  • inoperable,
  • NOGO,
  • marvelous,
  • reachy,
  • fishy,
  • Incogitable,
  • unrealistic,
  • weak,
  • on thin ice,
  • not likely,
  • difficult to believe,
  • Controvertible,
  • non-functional,
  • won't wash,
  • rings phony,
  • farfetched,
  • unlikely,
  • no-go,
  • unnegotiable,
  • hard to swallow,
  • unconvinced,
  • impractical,
  • handed-down,
  • non-realistic,
  • untrusty,
  • Doubtable,
  • Trustless,
  • not sensible,
  • nonviable,
  • unusable,
  • Insupposable,
  • unknowable,
  • outside chance,
  • won't hold water,
  • figmental,
  • Unbusinesslike,
  • unhistoric,
  • far-fetched,
  • dubious,
  • unbelievable,
  • blue sky,
  • for the birds,
  • implausible,
  • touch and go,
  • ungrounded,
  • unpersuasive,
  • Unhistorical,
  • inconceivable,
  • nonrealistic,
  • flimsy,
  • thick,
  • unverifiable,
  • ivory-tower,
  • up for grabs,
  • not a prayer,
  • no go,
  • won't fly,
  • unworkable,
  • legendary,
  • nonfunctional,
  • starry-eyed,
  • out of question,
  • extra ordinary.
  •starry-eyed (adjective)
  • starryeyed,
  • starry eyed,
  • more nonrealistic,
  • most nonrealistic,
  • non realistic.
  •thick (adjective)
  • un juster,
  • un-justest,
  • un fairest,
  • un just,
  • un-fairer,
  • un justest,
  • un fair,
  • un-juster,
  • un-just,
  • un-fair,
  • un fairer,
  • un-fairest.
  •thin (adjective)
  • more weakkneed,
  • in-substantial,
  • in-sufficient,
  • most weakkneed,
  • weak kneed,
  • more weak-kneed,
  • most diluted,
  • most weak-kneed,
  • in substantial,
  • more weak kneed,
  • weakkneed,
  • most stretched,
  • more stretched.
  •unapt (adjective)
  • dis-reputable,
  • in secure,
  • most unconfirmed,
  • un-easier,
  • in-secure,
  • un-settled,
  • in-distinct,
  • most impugnable,
  • pre carious,
  • in-securer,
  • un-stablest,
  • un-stable,
  • un settled,
  • un apter,
  • un easiest,
  • in distinct,
  • un easier,
  • dis reputable,
  • un-apter,
  • un-aptest,
  • un-confirmed,
  • un stable,
  • un stablest,
  • un easy,
  • in definite,
  • un-easiest,
  • pre-carious,
  • in securest,
  • un-stabler,
  • un stabler,
  • unconfirmed,
  • in-definite,
  • more unconfirmed,
  • in securer,
  • un aptest,
  • un confirmed,
  • more impugnable,
  • in determinate,
  • in-securest,
  • impugnable.
  •unbelievable (adjective)
  • open to doubt,
  • past belief,
  • cockamamie,
  • lamebrained.
  •unconceivable (adjective)
  • un-conceivable,
  • un conceivable.
  •unimaginable (adjective)
  • in-describable,
  • un commoner,
  • un-imaginable,
  • un imaginable,
  • most inapprehensible,
  • in effable,
  • un ordinary,
  • more inapprehensible,
  • in-apprehensible,
  • un commonest,
  • Inapprehensible,
  • un-common,
  • un-commoner,
  • un common,
  • beyond wildest dreams,
  • un-ordinary,
  • in-effable,
  • in describable,
  • in apprehensible,
  • not understandable.
  •unlikely (adjective)
  • un likelier,
  • out of ordinary,
  • un likeliest,
  • un-likely,
  • un-likeliest,
  • re-mote,
  • un likely,
  • out ordinary,
  • un-likelier.
  •unnegotiable (adjective)
  • un-negotiable,
  • un negotiable.
  •unrealistic (adjective)
  • un-realistic,
  • un realistic.
  •unsuspected (adjective)
  • inconceived.
  •unthinkable (adjective)
  • in-supportable,
  • in supportable,
  • un thinkable,
  • beyond possibility,
  • un-thinkable.
  •unusable (adjective)
  • un-usable,
  • un usable.
  •unworkable (adjective)
  • un-workable,
  • un workable.
  •weak (adjective)
  • forceless,
  • weakest.

• n.

  •
  • remote,
  • not to be expected,
  • I don't suppose,
  • there is no question of something,
  • dim,
  • long odds,
  • you'll be lucky.
  •
  • unsubstantial,
  • shaky.
  •improbable (noun)
  • supposed.
  •Other relevant words: (noun)
  • day,
  • danger,
  • should,
  • million,
  • nail,
  • catch,
  • nohow,
  • castle,
  • elusive,
  • tall,
  • doubtful,
  • beggar,
  • question,
  • fear,
  • marvellous,
  • questionable,
  • impossible,
  • unconvincing,
  • goodbye,
  • failing,
  • snowball,
  • untenable,
  • lucky,
  • apt,
  • way,
  • pig,
  • doubt,
  • fat,
  • dream,
  • breath,
  • incredible,
  • apocryphal.

• Other synonyms:

  •
  • Unconceivable.
  •
  • bank on,
  • uncertain,
  • iffy.
  •
  • unreal,
  • might,
  • expect.
  •inconceivable
  • unimaginable.
  •Other relevant words (noun):
  • paradoxical,
  • poor,
  • dubiousness,
  • distant,
  • choice,
  • faint,
  • small,
  • unforeseen,
  • ridiculous,
  • heavy,
  • strange,
  • inconsistent,
  • transpire,
  • fictitious,
  • develop,
  • puzzling,
  • unlikelihood,
  • hard to believe,
  • exaggerated,
  • thereupon,
  • absurd,
  • crazy,
  • debatable,
  • odd,
  • insane,
  • enigmatic,
  • baffling,
  • unforeseeable,
  • unpromising,
  • not on,
  • slight,
  • stretched,
  • contrary to reason,
  • refutable,
  • go,
  • overblown,
  • occur,
  • extraordinary,
  • doubtfulness,
  • hardly possible,
  • astonishing,
  • unattainable,
  • fall,
  • Impossibilities,
  • dislodge,
  • unacceptable,
  • proceed,
  • grandiloquent,
  • Inimaginable,
  • bizarre,
  • self-contradictory,
  • funny,
  • impracticability,
  • inconsiderable,
  • come,
  • fishlike,
  • impossibility,
  • appear,
  • wild,
  • suspicious,
  • miraculous,
  • out-of-the-way,
  • therewith,
  • inability,
  • wondrous,
  • calculable,
  • weird,
  • unpredicted,
  • tremendous,
  • suspect,
  • Unguessed,
  • dissimilar,
  • unpredictable,
  • unsuspected,
  • negligible,
  • slender,
  • conflicting,
  • terrific,
  • draw,
  • mythic,
  • unheralded,
  • displace,
  • unfeasible,
  • queer,
  • befall,
  • perplexing,
  • fantastic,
  • outside,
  • problematic,
  • undivined,
  • prodigious,
  • improbability,
  • visionary,
  • unannounced,
  • forced,
  • beyond belief,
  • wonderful,
  • fantastical,
  • unexpected,
  • foreseeable,
  • pass,
  • incredibly,
  • not kosher,
  • happen,
  • unprepared for,
  • ludicrous,
  • inconsistency,
  • contradictory,
  • ambiguous,
  • insignificant,
  • overdone,
  • without warning,
  • implausibility,
  • unanticipated,
  • irony,
  • implausibly,
  • oxymoronic,
  • fabulous,
  • mysterious,
  • contradiction,
  • supervene,
  • peculiar,
  • option,
  • meagre,
  • equivocal,
  • arrive,
  • outrageous,
  • bewildering,
  • find,
  • incongruous,
  • impracticable,
  • strained,
  • laughable,
  • be,
  • shady,
  • elapse,
  • get,
  • predictable,
  • nonexistence,
  • steep,
  • arise,
  • abnormal,
  • out of sight,
  • off,
  • unreasonable,
  • improbably,
  • confusing,
  • incomprehensible,
  • mad,
  • preposterous,
  • unbelievably,
  • absurdity,
  • unusual,
  • unlooked-for,
  • sudden.

Paraphrases for Improbable:

• Equivalence

  • Adjective
    implausible, unlikely, incredible.

• Forward Entailment

  • Adjective
    probable.

• Independent

  • Adjective
    impossible, unbelievable, unthinkable, questionable, likely, unseemly.

• Other Related

  • Adjective
    doubtful.

Antonyms for Improbable:

• adj.

  • all
    probable.
  • not likely
    ostensible, believable, plausible, tenable, real, ordinary, possible, likely, probably.
  • Other antonyms:
    equiprobable, conceivable, imaginable, verisimilar, presumptive, earthly, liable, credible, potential.