Antonyms for the phrase "coming to snuff" could include "peaceful resolution," "averting conflict," or "de-escalation." These terms all imply a situation in which tensions are diffused or resolved without any violent or aggressive actions. Another antonym could be "negotiation," emphasizing the importance of finding a compromise or mutual agreement. Additionally, "moving past conflict" or "burying the hatchet" could be antonyms, suggesting that parties are able to set aside their differences and move forward. Overall, antonyms for "coming to snuff" center around avoiding violent or aggressive responses and finding peaceful ways to address conflicts.