Antonyms for defend

competition:

attack.

protect:

reveal, ignore, harm, injure, attack, neglect, abandon, let go, hurt, relinquish, aid, squander, lose, renounce, discourage, surrender, release, leave, uncover, deny, forget, give up, help, support, forsake, resign, waste, quit, desert, assist, make peace, endanger.

show support for:

blame, disapprove, punish, protest, oppose, sentence, reject, accuse, condemn.

social:

prosecute.

noun:

controvert, disprove, submit, capitulate, cave, switch, yield, take back, reverse, bombard, refute, rebut.