いっしょけんめい

一所懸命

表記・読み：いっしょけんめい

1. 1

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

   副詞形容動詞名詞yojijukugo
2. 2

   (of a samurai) devoting oneself to (the defence of) one's territory

   名詞historical termyojijukugo