Obnoxy Share definition Flag Combination of 'obnoxious' and 'sexy', most often used to describe clothing or an outfit that blends the two. OMG that tight pink dress is obnoxy, I've gotta get it. Obnoxy by HubbaHubbaHippo August 19, 2009 0 0 Get merch Get the Obnoxy mug. Buy Now — $32.95 See more merch