イクナイ Show inflections LinksSentence search for イクナイSentence search for いくないEdit in JMdict Expressions (phrases, clauses, etc.), I-adjective (keiyoushi)1. not good; badInternet slang, Jocular, humorous term, See also いい, incorrect conjugation of いいOther formsいくない Discussions Log in to talk about this word.