Antonyms for the term "fended off" would be words that imply the opposite, such as "attacked," "offended," or "provoked." When you fend off something, you push it away or defend yourself against it, but when you attack, you're not defending, but instead, you're the aggressor. Offensively engaging is opposite to defensively retaining. 'Provoked' means that you instigated an action or argument, whereas 'fended off' means that you were the one who avoided a situation or got out of it. In summary, the antonyms for "fended off" would be words that connote attacking, provoking, or offending.