Un-humorous refers to the lack of humor or comedy in something. The antonyms for un-humorous are words that describe something that is funny, amusing, or humorous. Some of the antonyms for un-humorous include comical, amusing, entertaining, jocular, witty, whimsical, and humorous. When something is described as comical or amusing, it means that it is intended to make people laugh or smile. In contrast, the word un-humorous suggests that something is serious, dull, or lacking in humor. Therefore, if you want to add humor to something that is un-humorous, consider using one of the many antonyms available to describe a lighthearted and jovial tone.