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English definition of “impulsive”

impulsive

adjective     /ɪmˈpʌl.sɪv/
C2 showing behaviour in which you do things suddenly without any planning and without considering the effects they may have: Don't be so impulsive - think before you act. an impulsive man/decision/gestureDoing things without fear or proper thought impulsively     /-li/ adverb Doing things without fear or proper thought
(Definition of impulsive adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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