痴ち鈍どん

na-adjective, noun

dull-witted; slow; stupid

Literary or old-fashioned term for mental dullness or slowness; not common in everyday speech.

• 彼かれは痴ち鈍どんな顔かおつきで、何なにを考かんがえているのかわからなかった。

  He had a dull-witted expression, and I couldn't tell what he was thinking.