na-adjective, noun
diligent; hardworking; industrious
Describes a person or attitude characterized by steady, earnest effort. Often used in formal or written contexts. Antonym: 怠惰 (lazy).
Antonyms: 怠惰
彼は勤勉な学生で、毎日図書館で勉強している。
He is a diligent student and studies in the library every day.
勤勉さが成功の鍵だ。
Diligence is the key to success.