The phrase "came up snuff" is often used to describe a situation that did not meet expectations or fell short of success. Antonyms for this phrase could include "exceeded expectations," "surpassed goals," "went swimmingly," or "worked out perfectly." These antonyms suggest a positive outcome or a successful ending to a situation. Another antonym could be "avoided disaster," which suggests that a potential negative outcome was averted. Using these antonyms in place of "came up snuff" can provide a more optimistic and positive spin on a situation.