128 entries under superb topic. ×

3
unforeseen(great, excellent, super, groovy)
3
unpredicted(great, excellent, super, groovy)
3
welcome(great, excellent, super, groovy)
3
winning(great, excellent, super, groovy)
2
extravagant(adjective, strange, wonderful, stupid)
2
first-class(adjective, excellent, extraordinary, wonderful)
1
A-OK(adjective, excellent, wonderful, marvelous)
1
aces(adjective, excellent, wonderful, marvelous)
1
best(adjective, excellent, wonderful, marvelous)
1
cool(adjective, excellent, extraordinary, wonderful)
1
doozie(adjective, excellent, wonderful, marvelous)
1
fab(adjective, wonderful, marvelous, fantastic)
1
fictitious(adjective, excellent, wonderful, marvelous)
1
greatest(adjective, excellent, wonderful, marvelous)
1
groovy(adjective, wonderful, marvelous, fantastic)
1
immense(adjective, excellent, wonderful, marvelous)
1
out-of-sight(adjective, excellent, wonderful, marvelous)
1
out-of-this-world(adjective, excellent, wonderful, marvelous)
1
out of this world(expression, adjective, idiom, extraordinary)
1
peachy(adjective, excellent, wonderful, marvelous)
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APASmart Define. (2016). unbelievable thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unbelievable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unbelievable thesaurus" https://smartdefine.org/unbelievable/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, unbelievable thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unbelievable/thesaurus/synonyms>.
MLASmart Define. "unbelievable thesaurus" 30 March 2016. Web. 30 September 2026. <https://smartdefine.org/unbelievable/thesaurus/synonyms>