對不起

Simplified: 对不起

On the HSK 1 vocabulary list, at CEFR level A1.

duìbuqǐ ㄉㄨㄟˋ ˙ㄅㄨ ㄑㄧˇ

    • I'm sorry excuse me I beg your pardon
    • to let (sb) down to disappoint

Character by character

Sources