empty-headed
01
頭が空っぽ, 愚かな
lacking intelligence, common sense, or deep thinking
例
Despite the serious nature of the discussion, his empty-headed remarks derailed the conversation, leading to frustration among participants.
議論の深刻な性質にもかかわらず、彼の空っぽの発言は会話を脱線させ、参加者の間で不満を引き起こしました。
