discretionary
US
UK discretionary adj: (of personal judgment)
SC 可自行决定的 kě zì xíng jué dìng de
SC 可便宜行事的 kě zì xíng jué dìng de ，kě biàn yí xíng shì de
SC 酌情处理的 kě zì xíng jué dìng de ，zhuó qíng chǔ lǐ de
Participation in the event is not discretionary for students.
discretionary adj: (funds: for any use)
SC 可自由使用的 kě zì yóu shǐ yòng de
My discretionary income doesn't allow for travel.
discretionary income n: (money for luxuries)
SC 可任意支配的收入 kě rèn yì zhī pèi de shōu rù
SC 可支配收入 kě rèn yì zhī pèi de shōu rù，kě zhī pèi shōu rù
I spend quite a lot of my discretionary income on music and books.
我的可支配收入很多都花在音乐和书籍上。