しよし 知る由もない Show inflections LinksSentence search for 知る由もないSentence search for しるよしもないSentence search for 知る由も無いSentence search for 知るよしもないSentence search for 知るよしも無いKanji details for 知 and 由Edit in JMdict Expressions (phrases, clauses, etc.), I-adjective (keiyoushi)1. to have no way of knowing; to be completely ignorant ofOther forms知る由も無い 【しるよしもない】、知るよしもない 【しるよしもない】、知るよしも無い 【しるよしもない】 Discussions Log in to talk about this word.