optional Synonyms

discretionary nonmandatory permissive not required voluntary extra elective at one's discretion not obligatory not compulsory unneeded noncrucial marvell by choice extracurricular uncompelled unrestricted uncoerced unnecessary willful willed nonobligatory unforced up to the individual not necessarily unrequired at one's option unasked sunnah noncompulsory facultative electoral non-compulsory volunteer volitive gratuitous free extraneous escapable elected disposable dispensable accessory discretional deliberate chosen choice arbitrary ancillary inessential