Most illhumored refers to someone who is extremely bad-tempered or irritable. Antonyms for this term would describe a person who is the opposite - cheerful, happy, and friendly. Synonyms such as affable, jolly, and amiable come to mind. Other antonyms for illhumored include good-humored, pleasant, easygoing, and genial. These words describe individuals who are easy to talk to, approachable, and have a positive outlook on life. It is essential to remember that antonyms have a significant effect on the way we communicate, and understanding them can help us avoid misunderstandings in conversations. A person who is most illhumored can benefit from being around people who exude more positive energy, as it can help improve their mood and overall disposition.