"Snuck away" is an expression that indicates leaving or departing quietly or without being noticed. Antonyms for this term could be phrases such as "made an entrance," "joined in," "appeared," or "arrived." These antonyms suggest the opposite action of "snuck away" and imply a noticeable entrance rather than a stealthy exit. Other antonyms include terms such as "remained," "stayed put," "lingered," or "waited." These words imply a feeling of lingering or staying in one place rather than leaving without being seen or heard. Depending on the context, there could be various antonyms for the term of "snuck away" depending on the desired meaning to be conveyed.