138 entries under significant topic. ×

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lofty(adjective, fine, important, grand)
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magnanimous(adjective, fine, important, grand)
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meat and potatoes(expression, idiom, important, vital)
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mondo(substantial, large)
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plentiful(substantial, large)
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puissant(adjective, fine, important, grand)
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reasonable(substantial, large)
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regal(adjective, fine, important, grand)
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respected(important, famous, well-known, admired)
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solid gold(expression, substantial, large)
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something(substantial, large)
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something else(expression, substantial, large)
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sublime(adjective, fine, important, grand)
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super-duper(substantial, large)
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to the max(expression, idiom, substantial, large)
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tolerable(substantial, large)
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unreal(adjective, superior, unusual, exceptional)
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venerable(substantial, large)
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APASmart Define. (2015). major thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/major/thesaurus/synonyms
ChicagoSmart Define. 2015. "major thesaurus" https://smartdefine.org/major/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, major thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/major/thesaurus/synonyms>.
MLASmart Define. "major thesaurus" 6 July 2015. Web. 25 September 2026. <https://smartdefine.org/major/thesaurus/synonyms>