Impulsively rhymes with:
compulsively, compulsively, compulsively, compulsively, aggressively, cohesively, comprehensively, compulsively, conclusively, decisively, defensively, derisively, effusively, excessively, exclusively, expensively, explosively, extensively, impassively, impressively, inconclusively, inexpensively, intensively, massively, obsessively, offensively, passively, persuasively, progressively, reflexively, successively
Impulsively sounds like:
implacable, implausible, implausibly, inapplicable, inflexible, inflexibly