2
willed(adjective, free, deliberate, natural, willing)
1
accessory excess(expression, extraordinary, new, spare, fresh)
1
accidental(adjective, casual, useless, extra, worthless)
1
added(adjective, extraordinary, new, spare, fresh)
1
additional(adjective, extraordinary, new, spare, fresh)
1
ancillary(adjective, extraordinary, new, spare, fresh)
1
another(adjective, extraordinary, new, spare, fresh)
1
any
1
auxiliary(adjective, extraordinary, new, spare, fresh)
1
avoidable(adjective, casual, useless, extra, worthless)
1
beyond(adjective, extraordinary, new, spare, fresh)
1
button(adjective, extraordinary, new, spare, fresh)
1
chosen(adjective, free, deliberate, natural, willing)
1
designful(adjective, free, deliberate, natural, willing)
1
disjunctive
1
elected(adjective, free, deliberate, natural, willing)
1
electives
1
electoral
1
external
1
extracurricular
11 years ago|6.3k views|share |citing 
APASmart Define. (2015). optional thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/optional/thesaurus/synonyms
ChicagoSmart Define. 2015. "optional thesaurus" https://smartdefine.org/optional/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, optional thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/optional/thesaurus/synonyms>.
MLASmart Define. "optional thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/optional/thesaurus/synonyms>