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Definition of volatile adjective from the Oxford Advanced Learner's Dictionary

volatile

adjective
 
/ˈvɒlətaɪl/
 
/ˈvɑːlətl/
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  1. (often disapproving) (of a person or their moods) changing easily from one mood to another
    • a highly volatile personality
    Extra Examples
    • Edwards was a highly volatile character.
    • He was a very volatile character when playing.
    • She was a more volatile personality than her sister.
    • She was a top model famed for her volatile behaviour.
    Oxford Collocations Dictionaryverbs
    • be
    • become
    • remain
    adverb
    • extremely
    • fairly
    • very
    See full entry
  2. (of a situation) likely to change suddenly; easily becoming dangerous synonym unstable
    • This is a highly volatile situation from which riots might develop.
    • Exporting the product was difficult due to a volatile exchange rate.
    • a potentially volatile situation
    Oxford Collocations Dictionaryverbs
    • be
    • become
    • remain
    adverb
    • extremely
    • fairly
    • very
    See full entry
  3. (specialist) (of a substance) that changes easily into a gas
    • Petrol is a volatile substance.
    Topics Physics and chemistryc2
  4. Word OriginMiddle English (in the sense ‘creature that flies’, also, as a collective, ‘birds’): from Old French volatil or Latin volatilis, from volare ‘to fly’.
See volatile in the Oxford Advanced American DictionarySee volatile in the Oxford Learner's Dictionary of Academic English

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