Synonyms|42Antonyms|1|Broader|0Narrower|0Related|7
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worthless(adjective, empty, frivolous, ineffective, futile)
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insignificant(adjective, empty, worthless, frivolous, ineffective)
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APASmart Define. (2015). not serious thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/not_serious/thesaurus/synonyms
ChicagoSmart Define. 2015. "not serious thesaurus" https://smartdefine.org/not_serious/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, not serious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/not_serious/thesaurus/synonyms>.
MLASmart Define. "not serious thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/not_serious/thesaurus/synonyms>