5
impressive(adjective, great, difficult, fantastic, large)
5
king-size(adjective, huge, vast, copious)
5
majestic(adjective, strong, powerful, large, grand)
5
massy(adjective, big, giant)
5
phenomenal(adjective, great, excellent, superb, wonderful)
5
rattling
5
redoubtable(adjective, tough, difficult, awful, terrible)
5
terrifying(adjective, awful, terrible, horrible, afraid)
5
titan(adjective, feature, characteristic, size)
4
Bunyanesque(adjective, big, giant)
4
abominable(adjective, awful, terrible, horrible, afraid)
4
copious(adjective, large, huge, vast)
4
cosmic
4
dandy(adjective, good, great, informal, wonderful)
4
desperate(adjective, awful, terrible, horrible, afraid)
4
epic
4
fearsome(adjective, fear, grand, splendid, overwhelming)
4
fell
4
grievous(adjective, awful, terrible, horrible, afraid)
4
groovy(adjective, good, cool, great, pleasant)
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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>