| Main Entry: | optional |
| Part of Speech: | adjective |
| Definition: | possible; available as choice |
Synonyms: |
alternative, arbitrary, discretional, discretionary, elective, extra, facultative, free, no strings attached, noncompulsory, nonobligatory, not required, open, unforced, unrestricted, up to the individual, volitional, voluntary |
Antonyms: |
compulsory, forced, required |
| Main Entry: | arbitrary |
| Part of Speech: | adjective |
| Definition: | whimsical, chance |
Synonyms: |
approximate, capricious, discretionary, erratic, fanciful, frivolous, inconsistent, injudicious, irrational, irresponsible, offhand, optional, random, subjective, supercilious, superficial, unaccountable, unreasonable, unscientific, wayward, willful |
Antonyms: |
circumspect, rational, reasonable, reasoned, supported |
| Main Entry: | discretionary |
| Part of Speech: | adjective |
| Definition: | open to choice |
Synonyms: |
at the call, elective, facultative, judge and jury, leftover, nonmandatory, nonobligatory, open, optional, unrestricted |
Antonyms: |
nondiscretionary |
| Main Entry: | elective |
| Part of Speech: | adjective |
| Definition: | able to be chosen |
Synonyms: |
constituent, discretionary, electoral, facultative, nonobligatory, not compulsory, optional, selective, voluntary, voting |
Antonyms: |
required |
| Main Entry: | extra |
| Part of Speech: | adjective |
| Definition: | accessory; excess |
Synonyms: |
added, additional, ancillary, another, auxiliary, beyond, button, extraneous, extraordinary, fresh, further, fuss*, gingerbread, gravy, ice*, in addition, in reserve, in store, inessential, lagniappe, leftover, more, needless, new, one more, optional, other, over and above, perk*, plus, redundant, reserve, spare, special, superfluous, supernumerary, supplemental, supplementary, surplus, tip, unnecessary, unneeded, unused |
Antonyms: |
basic, elementary, essential, fundamental, integral, necessary |
| Main Entry: | uncalled-for |
| Part of Speech: | adjective |
| Definition: | unnecessary |
Synonyms: |
accidental, avoidable, fortuitous, futile, inappropriate, inessential, needless, nonessential, not required, optional, unessential, uninvited, unneeded, unrequired, unwanted, unwarranted, unwelcome, useless |
| Main Entry: | unessential |
| Part of Speech: | adjective |
| Definition: | unnecessary |
Synonyms: |
avoidable, beside the point, dispensable, expendable, futile, inessential, irrelevant, needless, nonessential, optional, uncalled-for, unimportant, unneeded, unrequired, useless, worthless |
| Main Entry: | unnecessary |
| Part of Speech: | adjective |
| Definition: | not required |
Synonyms: |
accidental, additional, avoidable, beside the point, casual, causeless, chance, dispensable, excess, exorbitant, expendable, extraneous, extrinsic, fortuitous, futile, gratuitous, haphazard, inessential, irrelevant, lavish, needless, noncompulsory, nonessential, optional, prodigal, profuse, random, redundant, supererogatory, superfluous, surplus, uncalled-for, uncritical, undesirable, unessential, unneeded, unrequired, useless, wanton, worthless |
Antonyms: |
indispensable, necessary, needed, required |
| Main Entry: | voluntary |
| Part of Speech: | adjective |
| Definition: | willing |
Synonyms: |
autonomous, chosen, deliberate, designful, discretional, elected, free, free-willed, freely, gratuitous, honorary, independent, intended, intentional, opted, optional, spontaneous, unasked, unbidden, uncompelled, unconstrained, unforced, unpaid, unprescribed, volitional, volunteer, willed, willful, wished, witting |
Antonyms: |
forced, involuntary, obligatory, unwilling |
| Main Entry: | inessential |
| Part of Speech: | adjective |
| Definition: | unnecessary |
Synonyms: |
accidental, additional, avoidable, beside the point, casual, causeless, chance, dispensable, excess, exorbitant, expendable, extraneous, extrinsic, fortuitous, futile, gratuitous, haphazard, irrelevant, lavish, needless, noncompulsory, nonessential, optional, prodigal, profuse, random, redundant, supererogatory, superfluous, surplus, uncalled-for, uncritical, undesirable, unessential, unneeded, unrequired, useless, wanton, worthless |