たゆまず努ど力りょく

noun, noun or participle which takes 'suru'

untiring effort; persistent hard work

Emphasizes continuous, unflagging effort without giving up. Often used in motivational or descriptive contexts.

• 彼かれのたゆまず努ど力りょくする姿すがたに感かん銘めいを受うけた。

  I was impressed by his untiring efforts.

• 成せい功こうの秘ひ訣けつはたゆまず努ど力りょくすることだ。

  The secret to success is persistent hard work.