импулсивен означава в английски

impetuous▼(describing one who makes arbitrary decisions)
adjective
[UK: ɪm.ˈpe.tʃʊəs] [US: ˌɪm.ˈpet.ʃwəs]

impulsive▼(highly reactive; inclined to make rapid decisions without due consideration)
adjective
[UK: ɪm.ˈpʌl.sɪv] [US: ˌɪm.ˈpəl.sɪv]