Noah Webster's New International Dictionary of the English Language

1. (a.) Giving offense; causing displeasure or resentment; displeasing; annoying; as, offensive words.

2. (a.) Giving pain or unpleasant sensations; disagreeable; revolting; noxious; as, an offensive smell; offensive sounds.

3. (a.) Making the first attack; assailant; aggressive; hence, used in attacking; -- opposed to defensive; as, an offensive war; offensive weapons.

4. (n.) The state or posture of one who offends or makes attack; aggressive attitude; the act of the attacking party; -- opposed to defensive.