Synonyms|1.2kAntonyms|101|Broader|9Narrower|7Related|405

127 entries under significant topic. ×

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fat(substantial, large)
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good-sized(substantial, definite, considerable)
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goodly(substantial, definite, large, considerable)
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grave(big, substantial, valuable, vital)
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greatest(adjective, solid, extraordinary, important, wonderful)
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healthy(substantial, definite, considerable)
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hefty(substantial, large)
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huge(substantial, large)
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key(vital, imperative)
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large-scale(substantial, large)
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lavish(substantial, large)
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leading(adjective, wonderful, exceptional, marvelous)
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measurable(substantial, definite, considerable)
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mondo(substantial, large)
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much(substantial, large)
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plentiful(substantial, large)
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reasonable(plain, substantial, large, obvious)
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respectable(substantial, large)
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sensible(substantial, definite, obvious, visible)
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sizeable(substantial, large)
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APASmart Define. (2015). marked thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/marked/thesaurus/synonyms
ChicagoSmart Define. 2015. "marked thesaurus" https://smartdefine.org/marked/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, marked thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/marked/thesaurus/synonyms>.
MLASmart Define. "marked thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/marked/thesaurus/synonyms>