There are many synonyms for the phrase "in sweat" that can be used to describe someone's physical exertion. Some common terms include "drenched in sweat," "sweating profusely," "sweating buckets," "sweating bullets," and "sweating like a pig." Each of these phrases communicates a similar idea: that someone is working hard and experiencing physical strain as a result. These phrases can be used in a variety of contexts, from sports games to workouts to hot summer days. No matter which synonym is chosen, the message is clear: someone is putting forth a lot of effort and their body is responding accordingly.