彼は律儀な人で、借りたものは必ず期日までに返す。
He's a conscientious person who always returns what he borrows by the due date.
彼女は毎年律儀に年賀状を送ってくれる。
She faithfully sends me a New Year's card every year.
約束の時間より早く来るとは、相変わらず律儀だね。
Arriving ahead of the agreed time — you're as dutiful as ever.