also: りょっこう
noun, noun or participle which takes 'suru', intransitive verb
strenuous effort; exertion; hard work
Refers to putting in great physical or mental effort, often with determination. Used as a noun or with する to mean 'to make strenuous efforts'.
彼は目標達成のために日々力行している。
He is making strenuous efforts every day to achieve his goal.
このプロジェクトの成功は全員の力行にかかっている。
The success of this project depends on everyone's strenuous efforts.