slang Shortening of "obnoxious." I wish my laugh weren't so obnoc. It makes me so self-conscious when I find something funny! My date was handsome, but he was so obnoc I had to leave early.
obno(c)(ˈɑbˈnɑk and ˈɑbno)
mod. obnoxious; disgusting. I wish you weren’t so obnoc all the time!