also: あたまのよい
expression, i-adjective (yoi/ii class)
Describes a person who is intellectually sharp, quick-witted, or academically capable. Often used as a prenominal modifier (頭のいい人).
彼はクラスで一番頭のいい生徒だ。
He is the brightest student in the class.
頭のいい人ほど謙虚だと言われる。
It is said that the more intelligent a person is, the more humble they are.
A set phrase combining 頭 (head) + の (possessive particle) + いい/よい (good). Literally 'good-headed', it is a straightforward metaphor for intelligence.