一所 いっしょ懸命 けんめい
isshokemmei

Noun
Adverb
na-Adjective

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

Yojijukugo
Related to 一生懸命
一所 いっしょ懸命 けんめいになって かれはその のぼった。
isshokemmēni natte karewa sono kini nobotta.
With great effort he climbed up the tree.
Noun

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

Dated
Yojijukugo