Synonyms of discretional

1 Syllable
free
2 Syllables
open, extra
3 Syllables
optional, free-willed, unforced
4 Syllables
arbitrary, uncompelled, unprescribed, elective, volitional, unrestricted, voluntary
5 Syllables
noncompulsory, alternative, facultative, discretionary
6 Syllables
nonobligatory