35
swingeing(adjective, feature, characteristic, size)
34
largest(adjective, feature, characteristic, size)
34
mountain(adjective, feature, characteristic, size)
22
awesome(adjective, fantastic, wonderful, marvelous, amazing)
21
great(adjective, good, bad, strong, sound)
21
fabulous(adjective, amazing, wonderful, marvelous, fantastic)
20
marvelous(adjective, great, amazing, wonderful, fantastic)
18
titanic(adjective, great, big, size, huge)
18
vast(adjective, great, big, wonderful, amazing)
17
extraordinary(adjective, strong, great, unusual, powerful)
17
gargantuan(adjective, big)
17
superb(adjective, good, bad, great, sound)
16
mammoth(adjective, great, big, large, size)
15
exceptional(adjective, good, bad, great, sound)
15
amazing(adjective, fantastic, wonderful, marvelous, strange)
15
incredible(adjective, good, unusual, strange, superb)
15
spectacular(adjective, strange, superb, wonderful, marvelous)
15
staggering(adjective, amazing, wonderful, marvelous, pleasant)
13
fantastic(adjective, good, great, unusual, strange)
13
elephantine(adjective, big, size, huge, vast)
11 years ago|16k views|share |citing 
APASmart Define. (2015). stupendous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stupendous/thesaurus/synonyms
ChicagoSmart Define. 2015. "stupendous thesaurus" https://smartdefine.org/stupendous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, stupendous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stupendous/thesaurus/synonyms>.
MLASmart Define. "stupendous thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/stupendous/thesaurus/synonyms>