The antonyms for the word "more well-suited" are less fitting, inappropriate, unsuitable, inadequate, and unfitting. When someone or something is less fitting or inappropriate, it implies that they do not match the situation or task. On the other hand, when a person or object is unsuitable, it means they are not the right fit for a particular job, position or activity. Inadequate refers to something or someone that is insufficient or below the required standard, while unfitting is the most general term for describing something that does not fit or belong in a particular context. Using these antonyms can help to add nuance and precision to a piece of writing or conversation, making it more accurate and engaging.