不由分说 bù yóu fēn shuō

DEFINITIONS

  1. to allow no explanation

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
由 yóu
HSK 4
cause, reason; from
分 fēn
HSK 1
divide; small unit of time etc.
说 shuō
HSK 1
speak, say, talk; scold, upbraid