The word "un-appeasable" refers to something that cannot be satisfied or pacified. Some antonyms for this word include content, satisfied, appeased, gratified, and fulfilled. These words describe a state of being where one's desires, needs, or wants have been met or have been found to be sufficient. A person who is content does not require more than what they have, while a person who is satisfied has received what they desired. Someone who is appeased has been calmed, while someone who is gratified has been given the pleasure they wanted. Lastly, someone who is fulfilled is at a state of satisfaction in all aspects of their life.