いっしょうけんめい

Common word

  1. adverb (fukushi), adjectival nouns or quasi-adjectives (keiyodoshi), noun (common) (futsuumeishi)

    very hard, with utmost effort, as hard as one can, with all one's might, for dear life, eagerly, desperately
    yojijukugo

    • もっと一生懸命勉強すべきだったのに。
      You should have worked harder.