幽默 (yōu mò) refers to a quality of being humorous, witty, or cleverly amusing — not just jokes or slapstick, but intelligent, subtle, and often understated humor. The character 幽 (yōu) means 'deep', 'quiet', or 'secluded', evoking subtlety and depth; 默 (mò) means 'silent' or 'tacit', suggesting restraint and unspoken insight. Together, they convey humor that arises from quiet observation, irony, or thoughtful timing — the kind that makes people smile inwardly before laughing aloud.

This word is commonly used to describe people ('a witty person'), styles ('a humorous speech'), or cultural products ('a humorous film'). It carries positive connotations of intelligence and emotional intelligence, distinguishing it from crude or aggressive joking. In Chinese contexts, 幽默 is especially valued in public speaking, literature, and everyday social interaction as a sign of sophistication and warmth.