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Synonyms of unstable in English:


  • 1 that old ladder looks unstable
    [Antonyms] steady
  • 2 unstable coffee prices
    changeable, volatile, variable, fluctuating, irregular, unpredictable, mercurial, capricious, erratic, 'on-again, off-again'
    [Antonyms] fixed, firm
  • 3 he was mentally unstable
    unbalanced, of unsound mind, mentally ill, deranged, demented, disturbed, unhinged, volatile
    informal kooky
    [Antonyms] balanced, of sound mind
  • Definition of unstable in:
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