smart

/ˈsmärt/

Middle English smert causing pain, from Old English smeart; akin to Old English smeortan

adjective

  1. having or showing a high degree of mental ability : intelligent, bright

  2. witty, clever

  3. rude or impolite in a bold and disrespectful way

a smart young student

verb

  1. to cause or be the cause or seat of a sharp stinging pain; also : to feel or have such a pain

  2. to feel or endure distress, remorse, or embarrassment

  3. to pay a heavy or stinging penalty

noun

  1. a smarting pain; especially : a stinging local pain

  2. poignant grief or remorse

  3. intelligence, know-how