The antonyms for the phrase "standing one's ground" are "yielding," "surrendering," "retreating," "conceding," and "capitulating." Each of these antonyms suggests a lack of firmness or conviction in one's position, and a willingness to compromise or give in to opposing forces. While "standing one's ground" implies strength, determination, and resolve, the antonyms connote weakness or indecision. In certain situations, conceding or retreating may be the most pragmatic course of action, but to "stand one's ground" is often seen as a moral imperative, a stance taken in defense of one's beliefs or principles, regardless of the outcome.