擅断

擅斷
shànduàn
arbitrary

CEDICT

Entry Composition

1 擅 shàn
  1. without authority
  2. to usurp
  3. to arrogate to oneself
  4. to monopolize
  5. expert in
  6. to be good at
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

Related entries

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

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