Synonyms|1.2kAntonyms|147|Broader|29Narrower|24Related|928

164 entries under significant topic. ×

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unavoidable(adjective, essential, basic, vital)
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vast(large, considerable)
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well-built(large, considerable)
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worthwhile(large, considerable)
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APASmart Define. (2016). principal thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/principal/thesaurus/synonyms
ChicagoSmart Define. 2016. "principal thesaurus" https://smartdefine.org/principal/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, principal thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/principal/thesaurus/synonyms>.
MLASmart Define. "principal thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/principal/thesaurus/synonyms>