JLPT N1 Vocabulary 育成 (ikusei) rearing, training, nurture, cultivation, promotion JLPT N1 Learning Done Flashcards Recall mode Meaning 育成 (いくせい, ikusei) is a JLPT N1 vocabulary word meaning “rearing, training, nurture, cultivation, promotion”. Kanji in this word 育 bring up 成 turn into Example sentences 1 彼らの専門は人材育成です。 Their department is human resources development. ← Previous蕾 All N1 vocabulary Next →焦げ茶