If you can choose whether or not to do something, it is optional. Extra credit is always optional; death and taxes are not.
Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory;
Adjective
possible but not necessary; left to personal choice
a.
Involving an option; depending on the exercise of an
option; left to one's discretion or choice; not compulsory; as,
optional studies; it is optional with you to go or stay.
n.
See Elective, n.
Optional
If to the former the movement was not optional, it was the same that the latter chose when it was optional.
Original writs are either optional or peremptory.
Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory;
Usage Examples
optional, ioptional, 9optional, 0optional, poptional, loptional, iptional, 9ptional, 0ptional, pptional, lptional, oiptional, o9ptional, o0ptional, opptional, olptional, ooptional, o0ptional, olptional, ootional, o0tional, oltional, opotional, op0tional, opltional, oprtional, op5tional, op6tional, opytional, opgtional, oprional, op5ional, op6ional, opyional, opgional, optrional, opt5ional, opt6ional, optyional, optgional, optuional, opt8ional, opt9ional, optoional, optjional, optkional, optuonal, opt8onal, opt9onal, optoonal, optjonal, optkonal, optiuonal, opti8onal, opti9onal, optioonal, optijonal, optikonal, optiional, opti9onal, opti0onal, optiponal, optilonal, optiinal, opti9nal, opti0nal, optipnal, optilnal, optioinal, optio9nal, optio0nal, optiopnal, optiolnal, optiobnal, optiohnal, optiojnal, optiomnal, optio nal, optiobal, optiohal, optiojal, optiomal, optio al, optionbal, optionhal, optionjal, optionmal, option al, optionqal, optionwal, optionsal, optionzal, optionql, optionwl, optionsl, optionzl, optionaql, optionawl, optionasl, optionazl, optionakl, optionaol, optionapl, optiona:l, optionak, optionao, optionap, optiona:, optionalk, optionalo, optionalp, optional:.