必不可少

On the HSK 7-9 vocabulary list, at CEFR level C1.

bìbùkěshǎo ㄅㄧˋ ㄅㄨˋ ㄎㄜˇ ㄕㄠˇ

    • absolutely necessary
    • indispensable
    • essential

Character by character

Sources