Hold fort is an idiomatic expression that refers to the act of defending a position or idea. Some antonyms for hold fort could be to relinquish, surrender, or abandon a position. While holding fort implies a steadfastness and determination to stand firm, the opposite actions of relinquishing, surrendering, or abandoning a position imply a willingness to compromise or give up one's position. Antonyms for hold fort could also include words like retreat, yield, or concede, all of which imply a retreat or defeat in the face of opposition. Ultimately, the antonyms for hold fort highlight the importance of being flexible and adaptable in the face of conflicting interests.