Pronunciation: (ub-nok'shus), [key]
1. highly objectionable or offensive; odious: obnoxious behavior.
2. annoying or objectionable due to being a showoff or attracting undue attention to oneself: an obnoxious little brat.
3. Archaic.exposed or liable to harm, evil, or anything objectionable.
4. Obs.liable to punishment or censure; reprehensible.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.