| Main Entry: | |
| 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: | facultative |
| Part of Speech: | adjective |
| Definition: | optional |
| Synonyms: | discretional, discretionary, elective, noncompulsory, nonobligatory, not required, volitional, voluntary |