こんきょはくじゃく 根拠薄弱 LinksSentence search for 根拠薄弱Sentence search for こんきょはくじゃくKanji details for 根, 拠, 薄 and 弱Edit in JMdict Na-adjective (keiyodoshi)1. unsubstantiated; flimsy Discussions Log in to talk about this word.