30 entries under vast topic. ×

23
large(adjective, great, big, substantial, large)
20
great(adjective, big, substantial, large, size)
20
massive(adjective, great, big, substantial, large)
19
ample(adjective, give, open, great, spread)
17
capacious(adjective, great, big, substantial, large)
17
extensive(adjective, great, big, substantial, large)
14
bulky(adjective, great, big, awkward, large)
13
spacious(adjective, great, big, substantial, large)
12
copious(adjective, give, great, big, substantial)
11
expansive(adjective, big, large, size, broad)
10
substantial(adjective, give, great, big, heavy)
9
roomy(adjective, open, great, spread, big)
8
comprehensive(adjective, great, big, substantial, large)
7
cavernous(adjective, big, large)
7
full(adjective, great, big, substantial, large)
5
abundant(adjective, give, great, big, substantial)
4
numerous(adjective, big, abundant, many)
4
prolific(adjective, big, large, abundant, huge)
3
billowing(adjective, big)
3
legion(adjective, big, numerous)
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APASmart Define. (2015). voluminous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/voluminous/thesaurus/synonyms
ChicagoSmart Define. 2015. "voluminous thesaurus" https://smartdefine.org/voluminous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, voluminous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/voluminous/thesaurus/synonyms>.
MLASmart Define. "voluminous thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/voluminous/thesaurus/synonyms>