なき 成り切る Show inflections LinksSentence search for 成り切るSentence search for なりきるSentence search for 成りきるKanji details for 成 and 切Edit in JMdict Godan verb with 'ru' ending, Intransitive verb1. to turn completely into; to become completelyOther forms成りきる 【なりきる】 Discussions Log in to talk about this word.