35
mountain(adjective, feature, characteristic, size)
35
strong(adjective, feature, characteristic, size)
35
swingeing(adjective, feature, characteristic, size)
34
gargantuan(adjective, big, large, size, huge)
34
titanic(noun, adjective, great, big, large)
32
massive(adjective, great, big, large, huge)
30
mammoth(noun, adjective, great, big, large)
26
giant(adjective, great, big, high, large)
22
elephantine(adjective, big, large, size, huge)
20
vast(adjective, great, big, large, size)
20
great(adjective, strong, tough, excellent, difficult)
14
grand(adjective, strong, cool, great, perfect)
14
humongous(adjective, great, informal, big, large)
14
whopping(adjective, great, slang, big, large)
13
Brobdingnagian(adjective, big, huge, vast, immense)
13
cyclopean(adjective, big, large, giant)
10
towering(adjective, strong, great, big, powerful)
10
bulky(adjective, strong, great, powerful, large)
9
extensive(adjective, great, big, large, huge)
9
monster(adjective, big, large, size, huge)
10 years ago|19k views|share |citing 
APASmart Define. (2016). colossal thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/colossal/thesaurus/synonyms
ChicagoSmart Define. 2016. "colossal thesaurus" https://smartdefine.org/colossal/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, colossal thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/colossal/thesaurus/synonyms>.
MLASmart Define. "colossal thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/colossal/thesaurus/synonyms>