noun, noun or participle which takes 'suru'
work hard and practice frugality
A yojijukugo (four-character idiom) expressing the virtue of diligent work and thrifty living. Often used in moral or self-improvement contexts.
祖父は勤倹力行を生涯の信条としていた。
My grandfather made hard work and frugality his lifelong creed.
勤倹力行の精神で家計を立て直した。
We rebuilt our household finances with a spirit of diligence and thrift.