根を詰める

こんをつめるkonotsumeru

expression · ichidan verb

  1. to persevere
  2. to keep at something (regardless of one's fatigue)

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences