どくくすり 毒にも薬にもならない Show inflections LinksSentence search for 毒にも薬にもならないSentence search for どくにもくすりにもならないKanji details for 毒 and 薬Edit in JMdict Expressions (phrases, clauses, etc.), I-adjective (keiyoushi)1. harmless but pointless; neither bad nor goodIdiomatic expression Discussions Log in to talk about this word.