100 entries under huge topic. ×

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deafening(great, fabulous, massive, incredible)
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disquieting(great, massive)
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dreadful(great, fabulous, massive, incredible)
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extremely large(expression, adjective, vast, massive)
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fearful(great, fabulous, massive, incredible)
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fierce(great, massive)
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frightful(great, fabulous, massive, incredible)
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horrible(great, massive)
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horrific(great, massive)
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intense(strong, great, powerful, high)
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mortal(vast, copious)
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plentiful(great, big)
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populous(great, big)
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profuse(vast, copious)
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shocking(great, massive)
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tall(adjective, high, lofty, elevated)
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terrorizing(great, massive)
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thunderous(great, massive)
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tidy(great, big)
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upsetting(great, massive)
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APASmart Define. (2016). immense thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/immense/thesaurus/synonyms
ChicagoSmart Define. 2016. "immense thesaurus" https://smartdefine.org/immense/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, immense thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/immense/thesaurus/synonyms>.
MLASmart Define. "immense thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/immense/thesaurus/synonyms>