discretion

名词 discretion:

1. freedom to act or judge on one's own
2. knowing how to avoid embarrassment or distress
   同义词：discreetness, circumspection, prudence
3. refined taste; tact
   同义词：delicacy
4. the power of making free choices unconstrained by external agencies
   同义词：free will
5. the trait of judging wisely and objectively
   同义词：discernment

1. I trust his discretion absolutely.
   我完全相信他的判断。
2. I won't tell you what time to leave, you're old enough to use your own discretion.
   我不告诉你什么时候离开，你已经长大了，该自己作出决定。
3. The hours of the meetings will be fixed at the monitor's discretion.
   开会时间将由班长自行决定。

dis.cre.tion

n.（名词）
The quality of being discreet; circumspection.See Synonyms at prudence
谨慎，周详：有谨慎品质；慎重周到参见 prudence
Ability or power to decide responsibly.
决定能力，决断力
Freedom to act or judge on one`s own:
行动的自由，判断的自由：
例句：
All the decisions were left to our discretion.
所有的决定都由我们自行做出

【引伸】
discre.tional
adj.（形容词）
discre.tionally
adv.（副词）