discretionary
🇺🇸
/dɪˈskreʃəneri/
🇬🇧
/dɪˈskreʃənəri/
Something that can be decided by someone in charge based on their judgment and not by strict rules.
The teacher gave some students a discretionary bonus for their excellent performance.
老師給一些學生發放了額外的獎金,以獎勵他們出色的表現。