頭の足りない (あたまのたりない) Japanese meaning | KotomoraMeanings
1
expression, i-adjective
dim-witted; half-baked; meatheaded
Colloquial and mildly derogatory; used to describe someone who is not very smart or whose thinking is shallow. Often used in casual speech.
却
下
さ
れ
た
。
Such a half-baked plan was immediately rejected.