Pronunciation: (u-fen'siv or, for 4, 5, ô'fen-, of'en-),[key] —adj. 1. causing resentful displeasure; highly irritating, angering, or annoying: offensive television commercials. 2. unpleasant or disagreeable to the sense: an offensive odor. 3. repugnant to the moral sense, good taste, or the like; insulting: an offensive remark; an offensive joke. 4. pertaining to offense or attack: the offensive movements of their troops. 5. characterized by attack; aggressive: offensive warfare.
—n. 1. the position or attitude of aggression or attack: to take the offensive. 2. an aggressive movement or attack: a carefully planned naval offensive.