不知進退 bù zhī jìn tuì

DEFINITIONS

  1. not knowing when to come or leave (idiom); with no sense of propriety

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
知 zhī
HSK 2
know, perceive, comprehend
進 jìn advance, make progress, enter
退 tuì
HSK 5
step back, retreat, withdraw