126 entries under big topic. ×

6
immense(adjective, open, great, large)
6
large-scale(adjective, substantial, large, grand)
5
colossal(adjective, great, high, large)
5
comprehensive(adjective, great, substantial, large)
5
copious(adjective, great, large, huge)
5
enormous(adjective, great, full, large)
5
gigantic(adjective, great, large, huge)
4
boundless(open, large, grand, huge)
4
generous(adjective, great, fair, important)
4
gross(adjective, great, substantial, large)
4
humongous(adjective, great, large, huge)
4
immeasurable(great, huge, loads, heaps)
4
largish(adjective, large, considerable)
4
plentiful(adjective, great, significant, substantial)
4
sound(adjective, strong, solid, important)
4
tall(adjective, high, lofty, length)
4
wide(adjective, open, great, substantial)
3
broad(adjective, open, great, large)
3
giant(adjective, great, high, large)
3
grandiose(adjective, great, large, huge)
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APASmart Define. (2016). sizable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sizable/thesaurus/synonyms
ChicagoSmart Define. 2016. "sizable thesaurus" https://smartdefine.org/sizable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, sizable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sizable/thesaurus/synonyms>.
MLASmart Define. "sizable thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/sizable/thesaurus/synonyms>