不懂装懂

不懂裝懂
bùdǒngzhuāngdǒng
to pretend to understand when you don't

CEDICT

to pretend to understand when one doesn't

Wiktionary

Entry Composition

1 不懂 bùdǒng
  1. (as a verbal complement) unable to comprehend (when seeing, hearing, etc.); cannot
  2. to not understand
  3. unable to comprehend (when seeing, hearing, etc.); cannot
2 装 zhuāng
  1. adornment
  2. to adorn
  3. dress
  4. clothing
  5. costume (of an actor in a play)
  6. to play a role
  7. to pretend
  8. to install
  9. to fix
  10. to wrap (sth in a bag)
  11. to load
  12. to pack
3 懂 dǒng
  1. to understand
  2. to comprehend