dumb 2022.12.06 dumbとは 意味・定義・例文 Adjective 形容詞 1. ⦅the -⦆ a person who is not able to speak at all 口のきけない人々 the deaf and dumb man 2. permanently or temporarily unable to speak, or unwilling to speak because someone is angry 口のきけない, 沈黙した, 絶句した