任意的;自由的
Discretional \Dis*cre"tion*al\, Discretionary \Dis*cre"tion*a*ry\, [Cf. F. discr['e]tionnaire.] Left to discretion; unrestrained except by discretion or judgment; as, an ambassador with discretionary powers.
discretional adj : having or using the ability to act or decide according to your own discretion or judgment; "The commission has discretionary power to award extra funds" [syn: {discretionary}]