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English definition of “volatile”

volatile

adjective     /ˈvɒl.ə.taɪl/ US  /ˈvɑː.lə.t̬əl/
likely to change suddenly and unexpectedly or suddenly become violent or angry : Food and fuel prices are very volatile in a war situation . The situation was made more volatile by the fact that people had been drinking a lot of alcohol . He had a rather volatile temper and can't have been easy to live with.Changing frequentlyChangingAngry and displeasedBad-tempered A volatile liquid or solid substance will change easily into a gas .The state of matter volatility     /ˌvɒl.əˈtɪl.ɪ.ti/ US  /ˌvɑː.ləˈtɪl.ə.t̬i/ noun [U] Changing frequentlyChanging
(Definition of volatile adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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