37
massive(adjective, great, big, large, grand)
35
mammoth(noun, adjective, great, big, large)
34
largest(adjective, feature, characteristic, size)
34
mountain(adjective, feature, characteristic, size)
34
strong(adjective, feature, characteristic, size)
34
swingeing(adjective, feature, characteristic, size)
32
giant(adjective, great, big, large, size)
31
vast(adjective, great, big, large, size)
26
elephantine(adjective, big, large, size, huge)
25
titanic(adjective, great, big, size, huge)
22
great(adjective, strong, big, powerful, substantial)
17
whopping(adjective, great, slang, big, large)
16
Brobdingnagian(adjective, big, large, huge, immense)
15
humongous(adjective, great, big, large, size)
14
towering(adjective, strong, great, big, powerful)
13
cyclopean(adjective, big, large, giant)
13
voluminous(adjective, great, big, large, grand)
11
extensive(adjective, great, big, large, huge)
10
bulky(adjective, strong, great, solid, powerful)
10
lofty(adjective, high, large, grand, huge)
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APASmart Define. (2016). gigantic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/gigantic/thesaurus/synonyms
ChicagoSmart Define. 2016. "gigantic thesaurus" https://smartdefine.org/gigantic/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, gigantic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/gigantic/thesaurus/synonyms>.
MLASmart Define. "gigantic thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/gigantic/thesaurus/synonyms>