4
Bunyanesque(adjective, big, giant)
4
boundless(adjective, big, large, huge, endless)
4
concrete(hard, deep, fat, broad, bulky)
4
copious(adjective, great, big, awkward, substantial)
4
cosmic(adjective, huge, immense)
4
durable(significant, large, considerable)
4
elevated(noble, high, grand, splendid, impressive)
4
extreme(adjective, great, high, excessive, huge)
4
galactic
4
ginormous
4
immeasurable(adjective, great, big, huge, vast)
4
impenetrable(adjective, density)
4
magnificent(adjective, strong, great, large, grand)
4
solemn(big, heavy, substantial, grand, impressive)
4
sound(significant, large, considerable)
4
well-built(adjective, person, body, significant, large)
3
abundant(great, big, significant, large, huge)
3
all in one
3
broad(adjective, hard, great, big, deep)
3
cavernous(adjective, large)
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APASmart Define. (2016). massive thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/massive/thesaurus/synonyms
ChicagoSmart Define. 2016. "massive thesaurus" https://smartdefine.org/massive/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, massive thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/massive/thesaurus/synonyms>.
MLASmart Define. "massive thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/massive/thesaurus/synonyms>