When we talk about being self-contented, we usually mean that we are satisfied with who we are and what we have accomplished. However, there are many antonyms or opposite words to describe the opposite of being more self-contented. For example, feeling dissatisfied, insecure, unsure, or unfulfilled can all be antonyms of self-contentedness. Another word could be unhappy, as a person feels unhappy with their life, themselves, or their achievements. Similarly, a person who is envious, jealous, or competitive can also be antonyms of being self-contented. In short, there are many words that can be used to describe the opposite of being more self-contented depending on the context and emotions.