The common phrase "sweats it" refers to a person feeling anxious or worried about something. Antonyms for this phrase would therefore suggest the opposite of anxiety and stress. Words such as relaxed, calm, carefree, and chilled can be used to convey the opposite of "sweats it". Other possible antonyms include nonchalant, indifferent, unconcerned, and laid-back. When someone is not "sweating it", they tend to exhibit confidence and a sense of ease, free from worry or pressure. These antonyms are useful when writing or speaking about people who are calm and collected, and not consumed by tension or uncertainty.