optional synonyms

optional

modif.

discretionary, elective, nonobligatory, noncompulsory, free, unrestricted, arbitrary, unforced, volitional, not required, according to one's will, with no strings attached*, take it or leave it*; see also voluntary.

Antonyms necessary*, compulsory*, enforced.

Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.