Something that is unwanted, unwelcome, or repugnant. The opposite of greeting something awesome with "hello", as in "Well heLLO beautiful ladies!"; unhello is something you do not want to greet at all. Popular among the kinds of kids who watch a lot of anime and go to cons.
That one weird guy who always carries a three-ring-binder? The other day he said that he wanted to rim me, and I was like, VERY UNHELLO! DO NOT WANT!
by Weaselpanties September 23, 2010