The phrase "sweated it out" typically refers to a situation where someone is enduring a difficult or stressful experience in order to achieve a positive outcome. Antonyms for this phrase might include "relaxing," "unwinding," "enjoying," or "calming down." Depending on the context of the situation, other antonyms might include "giving up," "walking away," or "abandoning." Regardless of the specific antonym used, the idea behind it is to create a sense of contrast with the intense effort that is implied by "sweating it out." By offering a contrasting idea, antonyms can help to clarify the message and tone of a particular phrase or sentiment.