17 entries under massive topic. ×

46
immense(adjective, feature, characteristic, great, big)
45
monumental(adjective, feature, characteristic, great, big)
43
stupendous(adjective, feature, characteristic, great, big)
42
big(adjective, feature, characteristic, great, large)
10
towering(adjective, high, large, huge, lofty)
8
whopping(adjective, great, slang, big, large)
5
great(adjective, big, huge, vast)
4
bulky(adjective, great, big, huge, vast)
4
extensive(adjective, great, big, huge, vast)
3
humongous(adjective, great, big, large, huge)
2
grand(great, big, huge, enormous)
2
immeasurable(great, big, huge, vast)
2
super(great, big, huge, immense)
1
barn door(expression, great, big, huge, immense)
1
blimp(great, big, huge, vast, immense)
1
gross(great, big, huge, vast, monstrous)
0
excessive(great, big, huge, vast)
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APASmart Define. (2016). mountainous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/mountainous/thesaurus/synonyms
ChicagoSmart Define. 2016. "mountainous thesaurus" https://smartdefine.org/mountainous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, mountainous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/mountainous/thesaurus/synonyms>.
MLASmart Define. "mountainous thesaurus" 1 March 2016. Web. 23 September 2026. <https://smartdefine.org/mountainous/thesaurus/synonyms>