独断

獨斷
dúduàn
  1. to decide alone without consultation
  2. arbitrary
  3. dictatorial

CEDICT

  1. (attributive) arbitrary; dictatorial; dogmatic
  2. Solitary Decisions (fragmentary text dated late Han era or later, attributed to Cai Yong)
  3. arbitrary; dictatorial; dogmatic
  4. to make decisions on one's own; to be arbitrary

Wiktionary

凭自己的主见决断事情。

重編國語辭典

Entry Composition

1 独 dú
  1. alone
  2. independent
  3. single
  4. sole
  5. only
2 断 duàn
  1. to break
  2. to snap
  3. to cut off
  4. to give up or abstain from sth
  5. to judge
  6. (usu. used in the negative) absolutely
  7. definitely
  8. decidedly

Containing this entry

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

Related entries

擅断 shànduàn arbitrary
武断 wǔduàn
  1. arbitrary
  2. subjective
  3. dogmatic
滥漫 lànmàn
  1. arbitrary
  2. indiscriminate
任意 rènyì
  1. any
  2. arbitrary
  3. at will
  4. at random
我母亲宁愿选彩票机上的任意数字，也不选我的幸运数字。

My mother prefers the arbitrary selection of the lottery machines over my lucky numbers.

Source: Tatoeba

乱 luàn
  1. in confusion or disorder
  2. in a confused state of mind
  3. disorder
  4. upheaval
  5. riot
  6. illicit sexual relations
  7. to throw into disorder
  8. to mix up
  9. indiscriminate
  10. random
  11. arbitrary
不能去乱碰的！

You can't touch it!

Source: Tatoeba