90 entries under big topic. ×

13
jumbo(adjective, great, large, size)
11
humongous(adjective, great, large, size)
11
substantial(adjective, great, important, significant)
10
cyclopean(adjective, giant)
8
mighty(adjective, size, huge, hidden)
8
monster(noun, adjective, amazing, size)
8
whopping(adjective, great, slang, large)
7
bulky(adjective, strong, great, powerful)
7
grand(adjective, strong, great, powerful)
7
mountainous(adjective, great, large, huge)
7
sizable(adjective, open, great, large)
7
widespread(adjective, open, space, large)
6
grandiose(adjective, great, large, extravagant)
5
extended(adjective, open, space, large)
5
far-reaching(adjective, spread, large, grand)
5
herculean(adjective, huge, immense, monstrous)
5
massy(adjective, giant)
4
Bunyanesque(adjective, giant)
4
considerable(adjective, strong, great, powerful)
4
copious(adjective, great, large, huge)
11 years ago|24k views|share |citing 
APASmart Define. (2015). vast thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/vast/thesaurus/synonyms
ChicagoSmart Define. 2015. "vast thesaurus" https://smartdefine.org/vast/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, vast thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/vast/thesaurus/synonyms>.
MLASmart Define. "vast thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/vast/thesaurus/synonyms>