不由自主 bù yóu zì zhǔ

can't help; involuntarily (idiom)

Word data

HSK Not in HSK
Frequency 15345th word

Definitions

  1. 1. can't help; involuntarily (idiom)

Characters

Character Meaning
not; no; (negative prefix)
from; because of; due to
self; oneself; from
main; owner; master