生真面目
きまじめ (kimajime)
overserious, deeply sincere, very earnest
N1
JLPT
Example Sentences
彼は生真面目な性格です。
かれはきまじめなせいかくです。
Kare wa kimajime na seikaku desu.
He has a very earnest personality.
その生真面目さが彼の強みです。
そのきまじめさがかれのつよみです。
Sono kimajimesa ga kare no tsuyomi desu.
His earnestness is his strength.