"Shit-hot" is an informal slang term that describes something or someone who is exceptional, impressive, or outstanding. There are many synonyms that can replace this informal term to express the same meaning. Some of the synonyms include outstanding, remarkable, phenomenal, excellent, superior, first-rate, top-notch, extraordinary, and remarkable. Alternatively, you can use expressions like "the best thing since sliced bread," "top of the line," or "cream of the crop." These synonyms convey the same sense of admiration and approval as the original phrase in a more formal way. When you need to convey a high level of proficiency or talent, choosing one of these synonyms is a smart choice.