discretionary

discretion +‎ -ary (“pertaining to”). Compare French discrétionnaire.

• (UK) IPA^(key): /dɪˈskɹɛʃən(ə)ɹi/

• Audio (Southern England)

  (file)

• (US) IPA^(key): /dɪsˈkɹɛʃəˌnɛɹi/

discretionary (comparative more discretionary, superlative most discretionary)

1. Available at one's discretion; able to be used as one chooses; left to or regulated by one's own discretion or judgment.

   discretionary income

   discretionary powers

   • 2020 May 6, Prof. Andrew McNaughton, “Time to challenge some sacred philosophies of recent years”, in Rail, page 32:

     The new normal: Will demand quickly return to pre-COVID levels?
     Unlikely, if only because with the country (and the world) in deep recession, many younger people will be in serious financial difficulty. A lack of disposable income simply won't allow them much discretionary travel.

• elective
• optional