不可思议

bù kě sī yì

unimaginable; incredible

Character by character

不bù
not

可kě
can

思sī
think

议yì
discuss

出门不带钱包，这在二十年前是不可思议的。

Going out without a wallet would have been unthinkable twenty years ago.

Tone: neutral.

Originally a Buddhist term for what lies beyond thought and words.

Learn this in Lesson 4 · HSK 5: 移动支付 (Paying with your phone)

A dialogue, a reading, word cards with audio and a drill that uses it, in Learn Chinese with Bao. The first lessons of every level are free.