'Unstable' definitions:
Definition of 'unstable'
From: WordNet
adjective
Lacking stability or fixity or firmness; "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy" [ant: stable]
adjective
Highly or violently reactive; "sensitive and highly unstable compounds"
adjective
Affording no ease or reassurance; "a precarious truce" [syn: precarious, unstable]
adjective
Suffering from severe mental illness; "of unsound mind" [syn: mentally ill, unsound, unstable]
adjective
Disposed to psychological variability; "his rather unstable religious convictions"
adjective
Subject to change; variable; "a fluid situation fraught with uncertainty"; "everything was unstable following the coup" [syn: fluid, unstable]
Definition of 'Unstable'
From: GCIDE
- Unstable \Un*sta"ble\, a. [Cf. Instable.] Not stable; not firm, fixed, or constant; subject to change or overthrow. -- {Un*sta"ble*ness}, n. --Chaucer. [1913 Webster]
- Unstable equilibrium. See Stable equilibrium, under Stable. [1913 Webster]
Synonyms of 'unstable'
From: Moby Thesaurus
- adrift,
- afloat,
- alternating,
- ambiguous,
- amorphous,
- borderline,
- brittle,
- buoyant,
- canted,
- capricious,
- changeable,
- changeful,
- changing,
- choppy,
- corruptible,
- crumbling,
- dangerous,
- deciduous,
- decrepit,
- desultory,
- deviable,
- deviating,
- deviative,
- deviatory,
- dickey,
- different,
- disintegrating,
- disorderly,
- divaricate,
- divergent,
- diversified,
- diversiform,
- dizzy,
- doubtful,
- dubious,
- dying,
- eccentric,
- effervescent,
- elastic,
- ephemeral,
- erose,
- erratic,
- evanescent,
- fading,
- fast and loose,
- fickle,
- fitful,
- fleeting,
- flickering,
- flighty,
- flitting,
- fluctuant,
- fluctuating,
- fluid,
- fly-by-night,
- flying,
- fragile,
- frail,
- freakish,
- fugacious,
- fugitive,
- giddy,
- hazardous,
- heeling,
- ill-balanced,
- impermanent,
- impetuous,
- impulsive,
- inconsistent,
- inconstant,
- indecisive,
- indefinite,
- infirm,
- insecure,
- insubstantial,
- irregular,
- irresolute,
- irresponsible,
- jagged,
- jerky,
- leaning,
- listing,
- lopsided,
- lubricious,
- mazy,
- mercurial,
- mobile,
- momentary,
- moody,
- mortal,
- motley,
- moving,
- mutable,
- nonconformist,
- nondurable,
- nonpermanent,
- nonstandard,
- nonuniform,
- off-balance,
- overbalanced,
- passing,
- perilous,
- perishable,
- pluralistic,
- poor,
- poorish,
- precarious,
- protean,
- provisional,
- ragged,
- rambling,
- resilient,
- restless,
- risky,
- rocky,
- rootless,
- rotten,
- rotten at,
- rough,
- roving,
- scatterbrained,
- shaky,
- shapeless,
- short-lived,
- shuffling,
- slippery,
- spasmodic,
- spineless,
- sporadic,
- suspect,
- temperamental,
- temporal,
- temporary,
- tentative,
- tergiversating,
- ticklish,
- top-heavy,
- tottery,
- transient,
- transitive,
- transitory,
- treacherous,
- tricky,
- unaccountable,
- unbalanced,
- uncertain,
- uncontrolled,
- undecided,
- undependable,
- undisciplined,
- undurable,
- unenduring,
- unequable,
- unequal,
- uneven,
- unfaithworthy,
- unfirm,
- unfixed,
- unhealthy,
- unorthodox,
- unpredictable,
- unreliable,
- unrestrained,
- unsafe,
- unsettled,
- unsolid,
- unsound,
- unstable as water,
- unstaid,
- unsteadfast,
- unsteady,
- unsturdy,
- unsubstantial,
- unsure,
- unsystematic,
- untrustworthy,
- ununiform,
- vacillating,
- vagrant,
- variable,
- variegated,
- variform,
- various,
- varying,
- vicissitudinary,
- vicissitudinous,
- volatile,
- wandering,
- wanton,
- wavering,
- wavery,
- wavy,
- wayward,
- weak,
- whimsical,
- wishy-washy,
- wobbly