Definition for Unsound:

• Not sound; defective; infirm; sickly; not orthodox; not sound in character; not honest; not to be trusted; not solid; not real; not substantial; not compact; not well established.

Synonyms for Unsound:

• adj.

  •bad (adjective)
  • displeasing,
  • black,
  • poor,
  • arrant,
  • irremediable,
  • unfavorable,
  • defective,
  • vile,
  • baneful,
  • inadequate,
  • faulty,
  • bad,
  • detrimental,
  • inferior,
  • unsatisfactory,
  • ill-suited,
  • wrong,
  • wretched,
  • inadvisable,
  • invalid,
  • unpleasant.
  •chancy (adjective)
  • iffy.
  •daft (adjective)
  • screwy,
  • witless.
  •damaged (adjective)
  • flawed,
  • in poor condition.
  •dangerous (adjective)
  • treacherous,
  • hairy,
  • unsafe,
  • perilous.
  •dishonest (adjective)
  • untrue.
  •erroneous (adjective)
  • inaccurate,
  • all wet,
  • inexact.
  •false (adjective)
  • casuistic,
  • incongruous,
  • false,
  • hollow,
  • illogical,
  • erroneous,
  • off the mark,
  • untruthful.
  •indefensible (adjective)
  • untenable.
  •insane (adjective)
  • fruity,
  • bananas,
  • loco,
  • moonstruck,
  • brainsick,
  • crackers.
  •jerry-built (adjective)
  • shoddy.
  •loco (adjective)
  • around the bend.
  •non compos mentis (adjective)
  • Non compos.
  •not well; flimsy (adjective)
  • infirm,
  • crazed,
  • diseased,
  • flawed,
  • ill,
  • demented,
  • specious,
  • defective,
  • frail,
  • shaky,
  • deranged,
  • incorrect,
  • unwell,
  • dangerous,
  • unstable,
  • fallacious,
  • unhinged,
  • faulty,
  • lunatic,
  • rickety,
  • unreliable,
  • insecure,
  • ailing,
  • insubstantial,
  • decrepit,
  • wobbly,
  • erroneous,
  • unbalanced,
  • weak,
  • mad,
  • in poor health,
  • unsafe,
  • unsteady,
  • delicate,
  • unsubstantial,
  • inaccurate,
  • incongruous,
  • insane,
  • unbacked,
  • not solid,
  • fragile,
  • unhealthy,
  • false,
  • tottering,
  • invalid,
  • illogical.
  •of unsound mind (adjective)
  • non compos mentis.
  •shaky (adjective)
  • unsupported,
  • unfirm,
  • shaky.
  •shallow (adjective)
  • shallow.
  •tottery (adjective)
  • tottery,
  • Rattletrap.
  •unhealthy (adjective)
  • unwholesome,
  • in poor health,
  • diseased.
  •weak (adjective)
  • Impuissant.
  •wicked (adjective)
  • wicked.
  •wrong (adjective)
  • not right,
  • incorrect.

• n.

  •
  • absurd,
  • irresponsible.
  •
  • fragile,
  • dangerous,
  • perilous,
  • insubstantial,
  • frail,
  • weakly,
  • flimsy,
  • hazardous,
  • unsafe,
  • delicate,
  • infirm,
  • weak,
  • unsubstantial,
  • decrepit,
  • feeble,
  • puny.
  •
  • demented,
  • dodgy,
  • cracked,
  • non compos mentis,
  • brainsick,
  • disordered,
  • nuts,
  • batty,
  • bold,
  • distraught,
  • gaga,
  • unbalanced,
  • wacky,
  • nutty,
  • fruity,
  • cuckoo,
  • loco,
  • bananas,
  • bonkers,
  • buggy,
  • mad,
  • maniac,
  • off,
  • dotty,
  • maniacal,
  • crazy,
  • screwy,
  • crackers,
  • Daffy,
  • daft,
  • lunatic,
  • touch-and-go,
  • moonstruck,
  • loony,
  • chancy,
  • touched.
  •
  • spurious,
  • sophistic,
  • specious,
  • false,
  • illogical.
  •
  • untrue,
  • incorrect,
  • mistaken,
  • erroneous,
  • inaccurate.
  •
  • impolitic,
  • injudicious,
  • ill-advised,
  • indiscreet,
  • ill-considered,
  • imprudent,
  • unwise.
  •false (noun)
  • ill-founded,
  • illogical,
  • incongruous,
  • erroneous,
  • false.
  •insecure (noun)
  • weak.
  •unsound (noun)
  • high-risk,
  • mentally ill,
  • invalid,
  • unfit,
  • decayed,
  • tatterdemalion,
  • broken-down,
  • long,
  • fallacious,
  • damaged,
  • insane,
  • unhealthy,
  • speculative,
  • corroded,
  • ramshackle,
  • unstable,
  • tumble-down,
  • rotten,
  • unreliable,
  • dilapidated,
  • bad,
  • risky,
  • bedraggled,
  • insecure,
  • wildcat,
  • rotted,
  • undependable.

• v.

  •deranged (verb)
  • unbalanced.

• Other synonyms:

  •
  • chancy,
  • bonkers,
  • dicey,
  • bananas,
  • batty,
  • brainsick,
  • fruity,
  • loco,
  • dotty,
  • crackers,
  • weakly,
  • Daffy,
  • shaky,
  • touch-and-go,
  • sophistic.
  •
  • ill-considered,
  • cracked,
  • decrepit,
  • incorrect,
  • ill-advised,
  • wacky,
  • daft,
  • hazy,
  • distraught,
  • questionable,
  • impolitic,
  • buggy,
  • puny,
  • nuts,
  • erroneous,
  • indiscreet,
  • mistaken,
  • maniacal,
  • imprudent,
  • nutty,
  • gaga,
  • demented,
  • unsafe,
  • infirm,
  • unwise,
  • bold,
  • inaccurate,
  • loony,
  • non compos mentis,
  • lunatic,
  • crazy,
  • frail,
  • injudicious,
  • screwy.
  •
  • feeble,
  • untrue,
  • touched,
  • disordered,
  • spurious,
  • flimsy,
  • unsubstantial,
  • moonstruck,
  • fragile.
  •
  • insubstantial,
  • mad,
  • dodgy.
  •
  • delicate,
  • false.
  •
  • weak.
  •
  • off.
  •illogical
  • illegitimate.
  •indefensible
  • untenable.
  •irrational
  • illogical.
  •pathological
  • morbid.
  •plausible
  • specious.
  •preposterous
  • absurd.
  •Other relevant words:
  • ill-judged,
  • fraudulently,
  • tottering,
  • marred,
  • pathological,
  • unsteady,
  • falsely,
  • gnostic,
  • irresponsible,
  • inexpedient,
  • pretended,
  • pantheistic,
  • unsatisfying,
  • unsubstantial,
  • unjustifiable,
  • enervate,
  • incomplete,
  • tarnished,
  • unsafe,
  • fallacious,
  • uncertain,
  • poorly,
  • unprepared,
  • unscriptural,
  • tender,
  • absurd,
  • faze,
  • charged,
  • powerless,
  • myopic,
  • off,
  • pointless,
  • precarious,
  • ill,
  • ticklish,
  • in poor health,
  • shoddy,
  • certifiable,
  • high-risk,
  • undeveloped,
  • pathogenic,
  • disappointing,
  • deranged,
  • heterodox,
  • regretful,
  • devoid,
  • abed,
  • empty,
  • incorrectly,
  • wanting,
  • falseness,
  • uncollectible,
  • Misadvised,
  • spurious,
  • loco,
  • Annulled,
  • hazardous,
  • slippery,
  • speculative,
  • folly,
  • illogical,
  • mixed,
  • shifting,
  • manic,
  • odd,
  • sham,
  • unreflecting,
  • psychotic,
  • inconclusive,
  • in error,
  • dishonestly,
  • questionable,
  • imprecise,
  • dodgy,
  • slight,
  • scamped,
  • makeshift,
  • behind ones back,
  • unproved,
  • off one's head,
  • wacko,
  • tentative,
  • feeble,
  • invalided,
  • faultily,
  • fraught,
  • effete,
  • Disintegrating,
  • perfidiously,
  • cranky,
  • lame,
  • insincerity,
  • Unreasoned,
  • ill-advised,
  • reasonless,
  • incongruous,
  • breakable,
  • touchy,
  • insalubrious,
  • peaky,
  • queer,
  • unreal,
  • mad as a hatter,
  • flimsy,
  • out of order,
  • falsehood,
  • volatile,
  • nonstandard,
  • chimerical,
  • improperly,
  • counterfeit,
  • blemished,
  • iffy,
  • Unapproved,
  • false,
  • wildcat,
  • dilapidated,
  • irrational,
  • neurosis,
  • cold,
  • moonstruck,
  • suppositional,
  • crazy as a loon,
  • factitious,
  • unthoughtful,
  • impaired,
  • senseless,
  • insolvent,
  • risky,
  • hairy,
  • second-rate,
  • injured,
  • fragile,
  • strange,
  • spiritless,
  • Uncanonical,
  • not right,
  • snide,
  • make-believe,
  • psychosis,
  • carious,
  • fallible,
  • cachectic,
  • ineffective,
  • sensitive,
  • crazed,
  • Feeble-minded,
  • flighty,
  • ill-founded,
  • Sprung,
  • wounded,
  • crazy,
  • corroded,
  • erroneous,
  • unaccepted,
  • bughouse,
  • unsoundness,
  • casuistic,
  • discontinuity,
  • sickness,
  • affective disorder,
  • unadvised,
  • Hylotheist,
  • provisional,
  • deficient,
  • inexact,
  • undiscerning,
  • heretical,
  • insanitary,
  • meanly,
  • unfaithfully,
  • soft,
  • shallow,
  • impolitic,
  • mazed,
  • dizzy,
  • antinomian,
  • uneven,
  • illegitimate,
  • warped,
  • WUD,
  • groundless,
  • supposititious,
  • captious,
  • unreflective,
  • pantheist,
  • derangement,
  • implausible,
  • unacceptable,
  • unbalanced,
  • faint,
  • unreasoning,
  • defectively,
  • delicate,
  • misguided,
  • abnormal,
  • indefensible,
  • dubious,
  • tenuous,
  • pathologic,
  • ill-considered,
  • unnerve,
  • mad,
  • on the fritz,
  • unpredictable,
  • tatterdemalion,
  • mistakenly,
  • mindless,
  • hazy,
  • fluid,
  • spoiled,
  • bogus,
  • laid up,
  • perilous,
  • ailing,
  • Rattletrap,
  • unproven,
  • rotted,
  • null,
  • haywire,
  • crackers,
  • wicked,
  • indiscreet,
  • brainsick,
  • distort,
  • rickety,
  • immature,
  • surreptitious,
  • insecure,
  • disease,
  • impure,
  • gimpy,
  • not following,
  • below par,
  • pale,
  • untenable,
  • debilitated,
  • ugly,
  • touched,
  • Crumbling,
  • hollow,
  • failing,
  • tainted,
  • sickly,
  • Unsteadfast,
  • inflammable,
  • decay,
  • untrue,
  • partial,
  • crude,
  • Unsolid,
  • valetudinarian,
  • sophistical,
  • off the mark,
  • untruthful,
  • weakened,
  • shifty,
  • Unhealth,
  • dangerous,
  • treachery,
  • flimsiness,
  • ungrounded,
  • dotty,
  • loony,
  • mock,
  • frail,
  • unperfected,
  • unsettle,
  • unsure,
  • non compos mentis,
  • touch-and-go,
  • wrongly,
  • unthinking,
  • stained,
  • demented,
  • insubstantial,
  • seismic,
  • distraught,
  • insufficient,
  • disoriented,
  • apocryphal,
  • unwell,
  • sick in the head,
  • screwy,
  • under the weather,
  • deceptively,
  • Valetudinary,
  • untrustworthy,
  • maniacal,
  • cuckoo,
  • unhealthy,
  • unwarranted,
  • infected,
  • unconvincing,
  • desultory,
  • found wanting,
  • misleadingly,
  • moribund,
  • imprudent,
  • falling apart,
  • sick,
  • unbraced,
  • so-called,
  • unorthodox,
  • stark raving mad,
  • flagging,
  • wonky,
  • batty,
  • out of one's mind,
  • short-handed,
  • unfounded,
  • repudiated,
  • inaccurate,
  • around the bend,
  • nutty,
  • decrepit,
  • wobbly,
  • sketchy,
  • paradoxical,
  • unsustainable,
  • rotten,
  • lacking,
  • off one's rocker,
  • dickey,
  • erroneously,
  • faithlessness,
  • jerry-built,
  • insensate,
  • dissembling,
  • Impuissant,
  • on the blink,
  • uncalled-for,
  • dicey,
  • contraband,
  • enfeebled,
  • contaminated,
  • weak,
  • variable,
  • vicious,
  • down,
  • unwise,
  • tense,
  • inadequately,
  • woozy,
  • big,
  • shortsighted,
  • mentally ill,
  • non sequitur,
  • deceitful,
  • meshuggah,
  • Unsensible,
  • doubtful,
  • asinine,
  • impotent,
  • in poor condition,
  • feckless,
  • pinchbeck,
  • unsubstantiated,
  • nuts,
  • patchy,
  • malfunctioning,
  • inconsiderate,
  • falsity,
  • unsupported,
  • fraudulent,
  • inconsistent,
  • unconsidered,
  • peaked,
  • loose,
  • halting,
  • deceptive,
  • uncorroborated,
  • inconsequential,
  • tinsel,
  • Absonant,
  • injudicious,
  • unthorough,
  • nonorthodox,
  • awry,
  • Colorable,
  • unsturdy,
  • botched,
  • unseeing,
  • pseudo,
  • critical,
  • all wet,
  • seedy,
  • barmy,
  • hollowness,
  • frangible,
  • nullified,
  • thoughtless,
  • ramshackle,
  • Daffy,
  • puny,
  • unbacked,
  • illogic,
  • bold,
  • adulterated,
  • not working,
  • soft in the head,
  • cracked,
  • gaga,
  • enervated,
  • illusory,
  • nasty,
  • morbid,
  • upper story,
  • falling down,
  • anxious,
  • of unsound mind,
  • unscientific,
  • wobbling,
  • unsettled,
  • unfactual,
  • hallucinated,
  • deceitfully,
  • feigned,
  • jesuitic,
  • diseased,
  • unhinged,
  • not all there,
  • exhausted,
  • specious,
  • unfit,
  • unfirm,
  • ape,
  • flawed,
  • draggled,
  • infirm,
  • crippled,
  • out of commission,
  • Chlorotic,
  • porosity,
  • Plated,
  • drained,
  • tattered,
  • wandering,
  • unsupportable,
  • damaged,
  • coseismal,
  • Deteriorated,
  • Healthless,
  • languid,
  • chancy,
  • amiss,
  • badly,
  • decayed,
  • groggy,
  • treacherous,
  • bedraggled,
  • bats,
  • Truthless,
  • undependable,
  • Unsustained,
  • unreliable,
  • Fainting,
  • weaving,
  • maniac,
  • not solid,
  • worthless,
  • forged,
  • status,
  • buggy,
  • Absonous,
  • Non compos,
  • catchpenny,
  • inaccurately,
  • broken,
  • impracticable,
  • shaky,
  • broken-down,
  • wacky,
  • peccant,
  • meagrely,
  • reckless,
  • daft,
  • hypocritical,
  • tetched,
  • run-down,
  • Jeopardous,
  • unworkable,
  • fictitious,
  • mistaken,
  • indebted,
  • unstable,
  • rocky,
  • shabby,
  • iii,
  • condition,
  • bedlam,
  • leaky,
  • unjustified,
  • morbidity,
  • imaginary,
  • unmaintainable,
  • disordered,
  • misleading,
  • incorrect,
  • afflicted,
  • bonkers,
  • hypothetical,
  • explosive,
  • drooping,
  • maddened,
  • matter,
  • cognitive disorder,
  • unattested,
  • insane,
  • unfinished,
  • bungled,
  • Unauthoritative,
  • sophistic,
  • disrepair,
  • temporary,
  • void,
  • mental,
  • Deluded,
  • dicky,
  • crackbrained,
  • indisposed,
  • emanationist,
  • unwholesome,
  • tricky,
  • gratuitous,
  • weaken,
  • meaningless,
  • impractical,
  • immoral,
  • imperfectly,
  • nutty as a fruitcake,
  • witless,
  • sophisticated,
  • psycho,
  • bananas,
  • sorry,
  • arrhythmic,
  • meretricious,
  • mentally deficient,
  • fruity,
  • rash,
  • lunatic,
  • unreasonable,
  • infidelity,
  • mediocre,
  • tottery,
  • defect,
  • long,
  • Languishing,
  • crackpot,
  • tough,
  • inconsequent,
  • tumble-down,
  • Morbose,
  • weakly,
  • harmed,
  • unauthentic,
  • baseless,
  • bastard,
  • disguised,
  • imperfect,
  • reduced.

Antonyms for Unsound:

• adj.

  • all
    sound.
  • not well; flimsy
    balanced, stable, reasonable, healthy, accurate, honest, secure, reliable, safe, certain, sane, protected, sound, correct, steady, right, sure, true, firm, rational, perfect, valid, strong, just, well.
  • Other antonyms:
    factual, ordered, tough, errorless, perfect, cogent, enlightened, precise, fit, exact, bouncing, lucid, chipper, compelling, satisfying, cured, letter-perfect, informed, normal, established, reasoned, flush, blooming, recovering, hale, well-grounded, healthful, good, unneurotic, wholesome, validated, judicious, whole, thriving, well-adjusted, wise, logical, certain, rehabilitated, convincing, improved, confirmed, plausible, sensible, organized, robust, sober, dependable, proven, hearty, persuasive, clear, lusty, commonsense, well-founded, veracious, flourishing, impeccable, able-bodied, stalwart, tested, conditioned, rugged, credible, demonstrated, hardy, justified, faultless, proper, substantiated, corroborated, flawless, well-conditioned, better, correct, mending.

• Other antonyms:

  • n.
    goodness, short.
  • n. t.
    sturdy.