4
hair-raising(adjective, awful, terrible, horrible, afraid)
4
infinite(adjective, great, big, huge, vast)
4
keen(adjective, good, great, excellent, slang)
4
leviathan(noun, adjective)
4
nasty(adjective, awful, terrible, horrible, afraid)
4
neat(adjective, good, great, excellent, slang)
4
nifty(adjective, good, great, slang, wonderful)
4
sizable(adjective, large)
4
swell(adjective, good, cool, great, pleasant)
4
walloping(adjective, informal, big)
4
wicked(adjective, awful, terrible, horrible, afraid)
3
almighty(adjective, awful, terrible, horrible, afraid)
3
beastly(adjective, awful, terrible, horrible, afraid)
3
beautiful(grand, splendid, overwhelming)
3
blatant(adjective, awful, terrible, horrible, afraid)
3
cavernous(adjective, large)
3
chronic(adjective, awful, terrible, horrible, afraid)
3
cool(adjective, good, great, excellent, slang)
3
cosmical
3
cracking(adjective, great, wonderful, marvelous, huge)
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APASmart Define. (2016). tremendous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/tremendous/thesaurus/synonyms
ChicagoSmart Define. 2016. "tremendous thesaurus" https://smartdefine.org/tremendous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, tremendous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/tremendous/thesaurus/synonyms>.
MLASmart Define. "tremendous thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/tremendous/thesaurus/synonyms>