The Collaborative International Dictionary of English v.0.48:
Impulsively \Im*pul"sive*ly\, adv. In an impulsive manner. [1913 Webster]WordNet (r) 3.0 (2006):
impulsively adv 1: in an impulsive or impetuous way; without taking cautions; "he often acts impulsively and later regrets it" [syn: impetuously, impulsively]