Definition for Unstable:

• Not steady; easily thrown over.

Synonyms for Unstable:

• adj.

  •capricious (adjective)
  • mutable,
  • changeful,
  • quirky.
  •changeable (adjective)
  • flighty,
  • Transposable,
  • modifiable,
  • transformable,
  • ever-changing,
  • shifting,
  • reformable,
  • Vicissitudinous,
  • adjustable,
  • convertible,
  • versatile,
  • flexible,
  • adaptable,
  • wavering,
  • alterable,
  • protean,
  • mercurial,
  • vacillating,
  • movable.
  •dangerous (adjective)
  • parlous,
  • Jeopardous,
  • perilous,
  • risky.
  •dizzy (adjective)
  • Feather-brained.
  •doubtful (adjective)
  • lubricious,
  • shifty,
  • not fixed,
  • Teetering,
  • moving,
  • borderline,
  • ambiguous,
  • weaving,
  • dubious.
  •fickle (adjective)
  • quicksilver.
  •fugitive (adjective)
  • evanescent,
  • fugacious.
  •harebrained (adjective)
  • loony.
  •insane (adjective)
  • mental.
  •mobile (adjective)
  • Unsteadfast.
  •moving (adjective)
  • unfixed.

• n.

  •
  • brittle,
  • sensitive.
  •
  • weak.
  •
  • change,
  • various.

• Other synonyms:

  •
  • feckless,
  • tottery.
  •
  • delicate,
  • mixed-up,
  • inconsistency.
  •
  • fantastical,
  • temperamental,
  • variant,
  • whimsical,
  • flimsy.
  •
  • freakish.
  •
  • fantastic.
  •
  • official,
  • suspect.
  •
  • uncertain.
  •Other relevant words:
  • perturbation,
  • imperfect,
  • ruffle,
  • ominous,
  • disconcertingly,
  • unorthodox,
  • agitate,
  • irresolution,
  • dotty,
  • fanciful,
  • dippy,
  • barter,
  • skittish,
  • alternation,
  • derange,
  • disturbed,
  • dainty,
  • Crumbling,
  • wasted,
  • nutty,
  • barmy,
  • silly,
  • stolid,
  • ugly,
  • Deviatory,
  • reduced,
  • scatterbrained,
  • vagrant,
  • vibratory,
  • alarming,
  • bananas,
  • shapeless,
  • confusion,
  • discomfit,
  • weathercock,
  • loose,
  • momentary,
  • hot,
  • disquiet,
  • separate,
  • oily,
  • restlessly,
  • unhinged,
  • obsessive,
  • disorderly,
  • riffle,
  • frail,
  • disturb,
  • pluralistic,
  • asymmetric,
  • creaking,
  • precariousness,
  • vacillate,
  • flying,
  • fraught,
  • disturbingly,
  • Vicissitudinary,
  • lopsided,
  • discomfort,
  • labile,
  • faltering,
  • nuts,
  • coalition,
  • distortable,
  • haphazard,
  • unsymmetric,
  • chameleon-like,
  • distraught,
  • nonpermanent,
  • unsystematic,
  • rough,
  • flux,
  • effervescent,
  • boneheaded,
  • psychotic,
  • unequal,
  • incongruous,
  • uneasy,
  • sashay,
  • malleable,
  • falling apart,
  • daft,
  • nervous,
  • confuse,
  • wishy-washy,
  • chancy,
  • wayward,
  • ragged,
  • mutability,
  • distressingly,
  • tipsy,
  • trembling,
  • critical,
  • nasty,
  • fatuous,
  • thickheaded,
  • turmoil,
  • variation,
  • nonuniform,
  • fluctuation,
  • fluent,
  • Flitting,
  • passing,
  • mazy,
  • slow-witted,
  • spineless,
  • non compos mentis,
  • impatiently,
  • neglected,
  • rotten,
  • alarmingly,
  • threatening,
  • motley,
  • nondurable,
  • dopey,
  • unsubstantiated,
  • embarrass,
  • smooth,
  • Daffy,
  • undisciplined,
  • falling down,
  • variform,
  • corruptible,
  • bad,
  • obtuse,
  • shift,
  • unsubstantial,
  • temporal,
  • shockingly,
  • soft,
  • writhing,
  • aberrant,
  • lop-sided,
  • unstableness,
  • Dull-witted,
  • different,
  • spasmodic,
  • inappropriate,
  • differing,
  • faulty,
  • nonconformist,
  • waterlogged,
  • psycho,
  • limp,
  • unscientific,
  • amalgamation,
  • buoyant,
  • indefinite,
  • beyond repair,
  • problematic,
  • metamorphic,
  • idiotic,
  • illomened,
  • leaning,
  • short-lived,
  • periodic,
  • coseismic,
  • seismic,
  • crackers,
  • loco,
  • vague,
  • listing,
  • touchy,
  • fear,
  • modification,
  • batty,
  • derelict,
  • unwell,
  • painstakingly,
  • divaricate,
  • ill at ease,
  • withered,
  • provisory,
  • unfaithful,
  • cranky,
  • uneasily,
  • plastic,
  • dim,
  • charged,
  • halfwitted,
  • diversified,
  • goofy,
  • upset,
  • misgiving,
  • resilient,
  • unhealthy,
  • irritatingly,
  • difficult,
  • industriously,
  • dilapidated,
  • Numskulled,
  • numbskulled,
  • shuffling,
  • crotchety,
  • impulsive,
  • doddering,
  • Instable,
  • wanton,
  • dodgy,
  • balmy,
  • distinct,
  • ruined,
  • defective,
  • wandering,
  • off-balance,
  • tumult,
  • decayed,
  • tenuous,
  • formless,
  • certifiable,
  • vicissitude,
  • altering,
  • thermolabile,
  • tatterdemalion,
  • canted,
  • tergiversating,
  • pliant,
  • oscillation,
  • portable,
  • Instabilities,
  • destruction,
  • stupid,
  • dicey,
  • tender,
  • fragile,
  • hazardous,
  • agitated,
  • Disintegrating,
  • unaccountable,
  • touched,
  • abnormal,
  • calm,
  • disreputable,
  • bemused,
  • slight,
  • fluky,
  • changeableness,
  • deviant,
  • cuckoo,
  • reactive,
  • demented,
  • feeble,
  • dickey,
  • Feeble-minded,
  • occasional,
  • startlingly,
  • brainsick,
  • flickering,
  • qualm,
  • in the balance,
  • agitation,
  • overturn,
  • tense,
  • ailing,
  • dopy,
  • annoyingly,
  • transitive,
  • deviative,
  • runny,
  • flow,
  • tentative,
  • trick,
  • dying,
  • in disrepair,
  • divergent,
  • bedraggled,
  • light-headed,
  • Crack-brained,
  • Unsettlement,
  • Unenduring,
  • excitable,
  • Decaying,
  • unrest,
  • Rattletrap,
  • Deteriorated,
  • insane,
  • Disquietly,
  • transitory,
  • uneasiness,
  • unsturdy,
  • Susceptive,
  • instability,
  • choppy,
  • liquid,
  • Heeling,
  • brainless,
  • unsealed,
  • vacillation,
  • variegated,
  • moronic,
  • Fatuitous,
  • unsupported,
  • unease,
  • inadequate,
  • antiquated,
  • unfirm,
  • touch-and-go,
  • confused,
  • elastic,
  • empty-headed,
  • deranged,
  • grievously,
  • helpless,
  • dim-witted,
  • coseismal,
  • Guideless,
  • rockbound,
  • asinine,
  • alteration,
  • screwy,
  • Addle-pated,
  • inconstancy,
  • fusion,
  • Inconsonant,
  • ramshackle,
  • ephemeral,
  • disordered,
  • wacky,
  • irregular,
  • scruple,
  • wavery,
  • uncertainly,
  • versatility,
  • erose,
  • inquietude,
  • amorphous,
  • Rattle-brained,
  • dumb,
  • disquietingly,
  • muddle-headed,
  • hairy,
  • wobbling,
  • Diversiform,
  • unformed,
  • inflammable,
  • creaky,
  • decrepit,
  • adrift,
  • worryingly,
  • jagged,
  • exchange,
  • simple-minded,
  • potty,
  • wonky,
  • uneven,
  • fallacious,
  • broken-down,
  • disloyal,
  • moody,
  • wild,
  • foolish,
  • eccentric,
  • laboriously,
  • excitement,
  • sickly,
  • bird-brained,
  • unsettlingly,
  • Deviating,
  • rambling,
  • anxious,
  • Unstaid,
  • top-heavy,
  • seismal,
  • crazy,
  • volcanic,
  • afloat,
  • iffy,
  • imbecilic,
  • alternating,
  • mobility,
  • flowing,
  • jerry-built,
  • witless,
  • vertiginous,
  • uncontrolled,
  • nonstandard,
  • unfit,
  • run-down,
  • intermittent,
  • fading,
  • cash,
  • sporadic,
  • blockheaded,
  • unsettle,
  • wriggly,
  • questionable,
  • poor,
  • discompose,
  • Unsolid,
  • jerky,
  • impetuous,
  • thick,
  • tumbledown,
  • lunatic,
  • chameleonic,
  • provisional,
  • undecided,
  • hare-brained,
  • inane,
  • insubstantial,
  • crank,
  • disturbance,
  • overwrought,
  • frivolous,
  • twist,
  • tremulous,
  • fleeting,
  • roving,
  • unnervingly,
  • fly-by-night,
  • mortal,
  • overbalanced,
  • nonsensical,
  • shaking,
  • bonkers,
  • unrestrained.

Paraphrases for Unstable:

• Equivalence

  • Adjective
    unsteady, shaky.

• Forward Entailment

  • Adjective
    stable.

• Independent

  • Adjective
    unsustainable, unbalanced, labile, uneasy, unsafe, imbalanced, restless, ever-shifting, uncomfortable, disturbed, unusable, destabilized, destabilised, unsettling, delicate, disturbing, stability, inconsistent, disquieting, tumultuous, steady, unequal, disordered, restive, variable.

• Other Related

  • Adjective
    unsettled, fragile, precarious, uncertain, destabilizing, unreliable, unpredictable, insecure, tenuous, turbulent, troubled, fluid, erratic, vulnerable, uneven, unsure, sensitive, weak.
  • Noun, singular or mass
    volatility, destabilization.

Antonyms for Unstable:

• adj.

  • all
    stable.
  • doubtful
    guarded, easy, steady, secure, unshaky, definite, happy, constant, firm, certain, protected, clear, dependable, predictable, sound, strong, safe, sure, unchanging, confident, reliable.
  • Other antonyms:
    infallible, trusty, even, resolute, durable, permanent, regular, undoubted, persistent, true, sane, abiding, Equilibrated, actual, unreactive, balanced, immutable, trustworthy, straight, tried and true, assured, incontestable, substantial, tried, real, uniform, equable, unquestionable, undeniable.

• Other antonyms:

  • n.
    nonexplosive, nonvolatile, nonvolatilisable, nonvolatilizable, tough, toughened.