Senses
卖呆/ 賣呆 to gaze idly
To stare blankly or gaze idly into space
卖呆/ 賣呆 to play dumb
To pretend to be naive, stupid, or foolish; to intentionally act silly to deceive others.
卖呆/ 賣呆 to loiter
To stand or wander about aimlessly or do nothing in Northern dialects