ひたすら

ひたすらhitasura

adverb · na-adjective

  1. intently
  2. single-mindedly
  3. devotedly
  4. solely
  5. earnestly
  6. with all one's heart

Study it in Yanamino

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