The antonyms for the word "sate on" are "discontented" and "unsatisfied." A person who is discontented feels uneasy and unhappy with their current situation, while someone who is unsatisfied is craving for more, whether it be material possessions, relationships, or personal achievements. These antonyms contrast with the feeling of being sated, which is characterized by complete satisfaction and fulfillment. Using antonyms can add depth and nuance to our communication and writing, helping us convey more precisely what we mean and feel.