| discretionary(adjective, open, free, will, voluntary) |
| optional(adjective, free, deliberate, natural, choice) |
| voluntary(adjective, feature, characteristic, open, free) |
| free(adjective, feature, characteristic, open, deliberate) |
| independent(adjective, feature, characteristic, free, respect) |
| unforced(adjective, feature, characteristic, open, free) |
| chosen(adjective, feature, characteristic, free, respect) |
| deliberate(adjective, feature, characteristic, free, respect) |
| designful(adjective, feature, characteristic, free, respect) |
| elected(adjective, feature, characteristic, free, respect) |
| elective(adjective, open, free, voluntary, optional) |
| free-willed(adjective, feature, characteristic, free, respect) |
| freely(adjective, feature, characteristic, free, respect) |
| spontaneous(adjective, feature, characteristic, free, deliberate) |
| alternative(adjective, open, free, voluntary, elective) |
| arbitrary(adjective, open, free, voluntary, elective) |
| autonomous(adjective, feature, characteristic, free, deliberate) |
| genuine(adjective, feature, characteristic, respect, natural) |
| gratuitous(adjective, feature, characteristic, free, deliberate) |
| unasked(adjective, feature, characteristic, free, deliberate) |