鈍どん物ぶつ

noun

blockhead; fool

A blunt, somewhat old-fashioned insult for a stupid or slow-witted person. Not commonly used in modern casual speech; more likely encountered in older literature or as a deliberate, slightly comedic insult.

• あんな鈍どん物ぶつに何なにを言いっても無む駄だだ。

  It's useless to say anything to such a blockhead.