yī​wèn​sān​bù​zhī

evasiveness

一问三不知 (一問三不知) yī​wèn​sān​bù​zhī
evasiveness idiom
Replying "I don't know" to every question asked, often as a way to avoid responsibility or providing information.
ignorance idiom
Being completely uninformed or having absolutely no idea what is going on.

Frequency

Written text
0.276 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)