normative faux pas

What's a word that means "suseptible to influence" or "subject to influence"? I was talking to a classmate and tried to use the word "normative" when talking about trying to make a difficult decision and totally caught me using the word incorrectly. Sadly, what I want the word to mean has nothing to do with what it actually means. So before the lexicon police come after me, help me find the word I'm looking for! I'll stick it on my running list of new words. And I'll think of something nice to send you. Coupon for Quiznos?