Found on Free Dictionary 1. a comic, absurd, or incongruous quality causing amusement.2. the faculty of perceiving and expressing or appreciating what is amusing or comical: a writer with humor and zest.3. an instance of being or attempting to be comical or amusing; something humorous.4. comical writing or talk in general; comical books, skits, plays, etc.5. mental disposition or temperament.6. a temporary mood or frame of mind: in a sulky humor today.7. a capricious or freakish inclination; whim or caprice; odd trait.8. any animal or plant fluid, esp. one of the body fluids once regarded as determining a person's constitution: blood, phlegm, black bile, or yellow bile.