unstable


Definition: Meaning of, unstable in English to English dictionary.

Pronunciation: / ʌnˈsteɪb(ə)l /

  • adjective
  • synonym
  • antonym
Word Forms:
Positive Comparative Superlative
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  1. likely to change suddenly and become worse [↪  instability]
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  2. something that is unstable is likely to move or fall
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  3. someone who is unstable changes very suddenly so that you do not know how they will react or behave
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  4. an unstable chemical is likely to separate into simpler substances
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