Synonyms|312Antonyms|117|Broader|4Narrower|13Related|364
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free(adjective, optional)
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free-willed
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freewill
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galvanizing
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gratuitous
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gripping
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inconsequential
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inessential
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intended
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intentional
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interesting
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intriguing
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invigorating
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involving
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laxative
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manual
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new
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novel
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option
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optionally(adverb, voluntarily)
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APASmart Define. (2015). obligatory thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/obligatory/thesaurus/antonyms
ChicagoSmart Define. 2015. "obligatory thesaurus" https://smartdefine.org/obligatory/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, obligatory thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/obligatory/thesaurus/antonyms>.
MLASmart Define. "obligatory thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/obligatory/thesaurus/antonyms>