独断专行

獨斷專行
dúduànzhuānxíng
  1. to decide and act alone (idiom); to take arbitrary action
  2. a law unto oneself

CEDICT

to act arbitrarily

Wiktionary

只按自己的意思行事，不考虑别人的意见。如：「这件事情这麽重要，决定之前，最好广求各方意见，不要独断专行。」也作「独断独行」、「独行独断」。

重編國語辭典

只按自己的意思行事，不考虑别人的意见

維基詞典

Entry Composition

1 独断 dúduàn
  1. to decide alone without consultation
  2. arbitrary
  3. dictatorial
=2 专 zhuān
  1. for a particular person, occasion, purpose
  2. focused on one thing
  3. special
  4. expert
  5. particular (to sth)
  6. concentrated
  7. specialized
=2 专 zhuān variant of 专 zhuān
3 行 xíng
  1. (bound form) to walk; to go; to travel
  2. (literary) trip; journey; visit
  3. (bound form) temporary; makeshift
  4. (bound form) current; in circulation
  5. (bound form) to do; to perform
  6. capable; competent
  7. all right; OK!; will do
  8. behavior; conduct (Taiwan pr. xìng)
  9. (literary) about to; soon

Related entries

独断独行 dúduàndúxíng
  1. to decide and act alone (idiom); to take arbitrary action
  2. a law unto oneself