5
commodious(adjective, open, great, substantial, large)
5
humongous(adjective, great, big, large, huge)
5
immeasurable(adjective, great, big, huge, immense)
5
infinite
5
loose(adjective, open, spread, full, large)
5
much(adjective, abundant, plenty)
5
princely(adjective, large, grand, impressive, overwhelming)
5
stupendous(adjective, great, big, huge)
5
twisting
4
elephantine(adjective, large)
4
giant(adjective, great, big, large, huge)
4
hefty(great, big, awkward, substantial, large)
4
jumbo(adjective, great, big, substantial, generous)
4
magnificent(adjective, large, size)
4
massy(adjective, size)
4
numerous(adjective, big, abundant, vast, many)
4
plenitudinous(adjective, give, big, rich, generous)
4
plenteous(adjective, give, great, complete, big)
4
prolific(adjective, big, large, abundant, huge)
4
tortuous
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APASmart Define. (2015). voluminous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/voluminous/thesaurus/synonyms
ChicagoSmart Define. 2015. "voluminous thesaurus" https://smartdefine.org/voluminous/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, voluminous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/voluminous/thesaurus/synonyms>.
MLASmart Define. "voluminous thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/voluminous/thesaurus/synonyms>