Serving to offend, assail, or attack; used in attack: opposed to defensive: as, offensive weapons.Consisting in or proceeding by attack; assailant; invading; aggressive: opposed to defensive.Serving to injure; injurious.Causing or giving offense; fitted or intended to offend or give displeasure; provocative of displeasure; insulting; annoying; displeasing: as, an offensive remark; offensive behavior.Disgusting; disagreeable; giving pain or unpleasant sensations: as, an offensive smell.n. With the definite article: An aggressive attitude or course of operations; a posture of attack: as, to act on or assume the offensive.