The phrase "chills off" refers to a feeling of extreme coldness or a sudden shiver running through someone's body. The antonyms for chills off can be terms like warmth, comfort, or coziness. These antonyms define a feeling of being comfortable and relaxed in your surroundings, a sensation of safety and contentment. Other antonyms could be relaxation, calmness, and serenity. These words reflect the opposite of a chill off sensation, where one feels a sense of ease and peacefulness. When one experiences warmth and comfort, they do not feel a sudden shiver from the cold, rather they feel the opposite sensation of a nice, cozy environment.