Someone that is super-fly; the opposite of an offy
You're an offy; I'm an onny.
by laquisha November 04, 2005
Indonesian word meaning monkey that is stubborn, tricky, kind, sweet, funny but also dimwitted and simple comes from Lip Gin
You are an Onny woman, kind caring but also simple and tricky.
by Wirjani March 12, 2015