The meaning of HUMOR is that quality which appeals to a sense of the ludicrous or absurdly incongruous : a funny or amusing quality. How to use humor in a sentence. HUMOR definition: 1. US spelling of humour 2. the ability to find things funny, the way in which people see that some…. Learn more. HUMOUR definition: 1. the ability to find things funny, the way in which people see that some things are funny, or the…. Learn more. Humour is a British variant of humor, meaning the quality of being funny or the ability to appreciate it. Learn the difference between humour and humor, the types of humour, and the idioms related to it.