"Take a powder" is a colloquial phrase that means to leave suddenly or unexpectedly, often with the intention of avoiding someone or something. Some antonyms for this phrase include "stay put," "remain," "linger," "await," or "stay behind." The opposite of taking a powder would be to stand firm and confront the situation, to stick around and face the music, or to remain in place until a resolution is reached. In some cases, taking a powder may be the best option to avoid a difficult or uncomfortable situation, but in others, it may be important to stand firm and face the consequences of one's actions.