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unstable

un·sta·ble

unstable

 
 
pronunciation:
uhn steI bl
features:
Word Explorer
part of speech: adjective
definition 1: likely to change suddenly; fluctuating.
an unstable economy
synonyms:
fluctuating, unsteady, up-and-down, volatile
antonyms:
stable
similar words:
changeable, fickle, fluid, inconstant, labile, mutable, precarious, shifting, temperamental, unsettled
definition 2: not steady; not securely fixed.
a rickety, unstable chair
synonyms:
rickety, shaky, unsteady
antonyms:
stable, steady
similar words:
decrepit, dilapidated, flimsy, insecure, precarious, tippy, unsound, wobbly
definition 3: emotionally or mentally unsound.
an unstable personality
synonyms:
unbalanced, unsound
antonyms:
stable
similar words:
crazy, demented, deranged, erratic, insane, neurotic, nutty, unstrung
definition 4: of chemical compounds, readily decomposing or reacting.
synonyms:
labile
antonyms:
stable
similar words:
fluid, reactive, volatile
definition 5: in physics, likely to change in state or composition.
antonyms:
stable
similar words:
fluid, labile, reactive, unsteady, volatile
derivations: unstably (adv.), unstableness (n.)
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  economy, element