一無所知 yī wú suǒ zhī

DEFINITIONS

  1. not knowing anything at all (idiom); completely ignorant
  2. without an inkling

CHARACTERS

一 yī
HSK 1
one; a, an; alone
無 wú negative, no, not; lack, have no
所 suǒ
HSK 2
place, location; numerary adjunct
知 zhī
HSK 2
know, perceive, comprehend