べらぼうめべらぼうめMeanings1interjectionyou fool!; you idiot!derogatoryusually written using kana aloneDerogatory interjection used to insult someone, calling them a fool or idiot. Strongly offensive and informal.「べらぼうめ！何なにを言いってるんだ！」と彼かれは怒ど鳴なった。"You fool! What are you talking about!" he shouted.
