90 entries under big topic. ×

66
immense(adjective, strong, open, great, spread)
59
enormous(adjective, large, size, expensive)
49
huge(adjective, large, size, expensive)
37
great(adjective, strong, powerful, amazing)
34
large(adjective, great, large, abundant)
32
gigantic(adjective, great, large, size)
31
tremendous(adjective, strong, great, powerful)
30
massive(adjective, great, large, huge)
28
gargantuan(adjective, large)
26
prodigious(adjective, large, size, expensive)
26
colossal(adjective, great, large, size)
24
mammoth(adjective, great, large, size)
22
titanic(adjective, great, large, size)
19
stupendous(adjective, great, wonderful, amazing)
19
giant(adjective, great, large, size)
19
immeasurable(adjective, great, large, fat)
17
Brobdingnagian(adjective, huge, immense, monstrous)
15
elephantine(adjective, large, size, huge)
15
monumental(adjective, great, large, size)
14
monstrous(adjective, great, large, size)
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APASmart Define. (2015). vast thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/vast/thesaurus/synonyms
ChicagoSmart Define. 2015. "vast thesaurus" https://smartdefine.org/vast/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, vast thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/vast/thesaurus/synonyms>.
MLASmart Define. "vast thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/vast/thesaurus/synonyms>