Antonyms of subdue :
fall, give up, go down, go under, collapse, fail, flop, flunk, fold, wash out, lose, discharge, emancipate, enfranchise, free, liberate, manumit, release, spring, unbind, uncage, unchain, unfetter, abet, aid, assist, back, help, prop up, support, foment, incite, instigate, provoke, stir, whip, advance, cultivate, encourage, forward, foster, further, nourish, nurture, promote.
Examples of usage:
He is only another man like myself, and I hope to subdue him, and to gain the contest. "The Grey Fairy Book", Andrew Lang.
He had none of the humble reverence which seemed to subdue most of her suitors; he saw her more as she really was than the rest did. "Shirley", Charlotte BrontÃ«.
Fergus: Fierce the man with scores of deeds; No light thing, him to subdue. "The Ancient Irish Epic Tale TÃ¡in BÃ³ CÃºalnge", Unknown.