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English definition of “impetuous”

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impetuous

adjective uk   /ɪmˈpet.ju.əs/ us  
likely to do something suddenly, without considering the results of your actions: He's so impetuous - why can't he think things over before he rushes into them? An impetuous word or action is said or done suddenly, without considering the likely results: The governor may now be regretting her impetuous promise to reduce unemployment by half.
impetuously
adverb uk   /-li/ us  
impetuousness
noun [U] uk   /-nəs/ ( formal also impetuosity ) us  
(Definition of impetuous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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