arbitrary
adj
1 based on personal opinion or impulse, not on reason 任意的; 任性的; 主观的
The choice of players for the team seems completely arbitrary. 队员的挑选似乎完全是主观决定的.
2 using uncontrolled power without considering others; dictatorial 霸道的; 专横的; 独断独行的
an arbitrary ruler 专横的统治者 * arbitrary powers 霸权.