ロクデナシTop 25000MeaningsNoun1. bum; good-for-nothing; ne'er-do-well (Usually kana)Other readingsろくでなしExamples2そのろくでなしどもはクビになりましたよ。Those good-for-nothing layabouts were sacked.俺おれはろくでなしさ。I'm a zero.