51 entries under voluntary topic. ×

0
natural
0
no strings attached(expression, adjective, idiom, open, free)
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noncompulsory(adjective, open, free, extra)
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nonobligatory(adjective, open, free, extra)
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not required(expression, adjective, open, free, extra)
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open(adjective, free, elective)
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possible
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requested
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unrestricted(adjective, open, free, elective)
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unwitting(natural, spontaneous)
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up to the individual(expression, adjective, idiom, open, free)
<123>
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APASmart Define. (2015). discretional thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/discretional/thesaurus/synonyms
ChicagoSmart Define. 2015. "discretional thesaurus" https://smartdefine.org/discretional/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, discretional thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/discretional/thesaurus/synonyms>.
MLASmart Define. "discretional thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/discretional/thesaurus/synonyms>