"Comminating" is not a commonly used word in the English language, and therefore there are no widely known antonyms for it. However, if we look at the meaning of the word, which refers to threatening or warning someone, some possible antonyms could be "comforting," "reassuring," or "encouraging." These words represent the opposite of threatening or warning and instead imply a sense of safety, security, and positivity. While antonyms for this particular word may be scarce, it is important to remember that language is constantly evolving and changing, and new words are being introduced every day.