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



BrE BrE//ɪmˈpʌlsɪv//
; NAmE NAmE//ɪmˈpʌlsɪv//
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(of people or their behaviour) acting suddenly without thinking carefully about what might happen because of what you are doing synonym impetuous, rash an impulsive decision/gesture You're so impulsive! He has an impulsive nature. Word Originlate Middle English (in the sense ‘tending to impel’): from French impulsif, -ive or late Latin impulsivus, from Latin impuls- ‘driven onwards’, from impellere, from in- ‘towards’ + pellere ‘to drive’. The current sense dates from the mid 18th cent.Extra examples He told me not to be impulsive but to think it over. It was not wickedness that led him into crime but a cheerfully impulsive nature and a complete lack of reasoning power. She has a generous and impulsive nature.
See the Oxford Advanced American Dictionary entry: impulsive