こっくべんれい 刻苦勉励 LinksSentence search for 刻苦勉励Sentence search for こっくべんれいKanji details for 刻, 苦, 勉 and 励Edit in JMdict Noun, Suru verb1. being arduous; working diligently enduring hardshipsYojijukugo (four character compound) Discussions Log in to talk about this word.