呆头呆脑 dāitóudāinǎo dull-witted Definitions Defs Origin Strokes Stroke Words Sentences Sents 呆 dāi noun foolish foolish; stupid; slow-witted头 頭 tóu noun head the head of a human or animal; hair or hairstyle呆 dāi noun foolish foolish; stupid; slow-witted脑 腦 nǎo nounlocative head (bound form) The head; often used in phrases describing head movements or appearances.