un-stable

Main Entry:
unstable [uhn-stey-buhl]
Part of Speech: adjective
Definition: doubtful
Synonyms: ambiguous, borderline, capricious, changeable, dizzy, dubious, erratic, fickle, fitful, fluctuating, giddy, inconsistent, inconstant, insecure, irrational, lubricious, mercurial, mobile, movable, moving, mutable, not fixed, precarious, rickety, risky, rocky, sensitive, shaky, shifty, slippery, suspect, teetering, temperamental, ticklish, tricky, uncertain, unpredictable, unsettled, unsteady, untrustworthy, vacillating, variable, volatile, wavering, weak, weaving, wiggly, wobbly
Antonyms: stable, steady, strong
Main Entry: changeable
Part of Speech: adjective
Definition: erratic
Synonyms: agitated, capricious, changeful, commutative, convertible, fickle, fitful, flighty, fluctuating, fluid, impulsive, inconstant, indecisive, irregular, irresolute, irresponsible, kaleidoscopic, mercurial, mobile, movable, mutable, permutable, protean, restless, reversible, revocable, shifting, skittish, spasmodic, transformable, transitional, uncertain, unpredictable, unreliable, unsettled, unstable, unsteady, vacillating, vagrant, variable, variant, varying, versatile, volatile, wavering, whimsical
Antonyms: certain, changeless, constant, fixed, lasting, reliable, stable, steady, sure, unchangeable, undeviating
Main Entry: dangerous
Part of Speech: adjective
Definition: hazardous, troubling
Synonyms: alarming, bad, breakneck, chancy, critical, dangersome, deadly, delicate, dynamite, exposed, fatal, formidable, hairy*, heavy*, hot*, impending, impregnable, insecure, jeopardous, loaded, malignant, menacing, mortal, nasty, on collision course, parlous, perilous, portentous, precarious, pressing, queasy, risky, serious, serpentine, shaky, speculative, terrible, thorny, threatening, ticklish, touch-and-go, touchy, treacherous, ugly*, unhealthy, unsafe, unstable, urgent, viperous, vulnerable, wicked
Antonyms: careful, guarded, safe, secure, unhazardous, untroubled
Main Entry: desultory
Part of Speech: adjective
Definition: random
Synonyms: aimless, chance, chaotic, deviating, erratic, haphazard, orderless, rambling, unmethodical, unstable, unsystematic, without purpose
Main Entry: dizzy
Part of Speech: adjective
Definition: flighty, scatterbrained
Synonyms: capricious, changeable, crazy, empty-headed, fatuous, feather-brained, fickle, foolish, frivolous, giddy, harebrained, heady, inane, light-headed, silly, skittish, unstable
Antonyms: clear-thinking, sensible, smart
Main Entry: doubtful
Part of Speech: adjective
Definition: questionable, unclear
Synonyms: ambiguous, borderline, chancy, clouded, contingent, debatable, dicey, disreputable, doubtable, dubious, dubitable, equivocal, far-fetched, fat chance, fishy, hazardous, hazy, iffy, impugnable, inconclusive, indecisive, indefinite, indeterminate, indistinct, insecure, long shot, obscure, on thin ice, open, pending, precarious, problematic, shady, sneaky*, speculative, suspect, suspicious, touch-and-go, touchy, uncertain, unconfirmed, undecided, uneasy, unsettled, unstable, unsure, up for grabs
Notes: a person is capable of doubting, whereas a thing is dubitable; dubious, unlike doubtful, carries the connotation of suspicion
Antonyms: certain, clear, confirmed, decided, definite, exact, resolved, settled, unquestionable
Main Entry: erratic
Part of Speech: adjective
Definition: unpredictable; wandering
Synonyms: aberrant, abnormal, anomalous, arbitrary, bizarre, capricious, changeable, desultory, devious, dicey, directionless, dubious, eccentric, fitful, flaky*, fluctuant, idiosyncratic, iffy, incalculable, inconsistent, inconstant, irregular, meandering, mercurial, nomadic, oddball, peculiar, planetary, rambling, roving, shifting, spasmodic, strange, stray, uncertain, undirected, unnatural, unreliable, unstable, unusual, vagarious, variable, volatile, wayward, weird, whimsical
Antonyms: certain, consistent, definite, dependable, predictable, regular, reliable, steady, sure, unchanging
Main Entry: explosive
Part of Speech: adjective
Definition: volatile, dangerous
Synonyms: at the boiling point, bursting, charged, consequential, convulsive, detonating, detonative, ebullient, eruptive, fiery, forceful, frenzied, fulminant, fulminating, hazardous, impetuous, meteoric, overwrought, perilous, raging, rampant, stormy, tense, touchy, ugly, uncontrollable, unstable, vehement, violent, wild
Antonyms: calm, peaceful, safe
Main Entry: faithless
Part of Speech: adjective
Definition: disloyal
Synonyms: capricious, changeable, changeful, cheating, deceitful, dishonest, double-crossing, double-dealing, doubting, dubious, false, fickle, fluctuating, inconstant, perfidious, recreant, skeptical, traitorous, treacherous, two-faced, two-timing, unbelieving, unconverted, unfaithful, unloyal, unreliable, unstable, untrue, untrustworthy, untruthful, wavering
Antonyms: believing, constant, faithful, loyal, reliable, true
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