93 entries under extraordinary topic. ×

10
improbable(adjective, great, excellent, strange)
10
prodigious(adjective, good, great, unusual)
9
unique(adjective, superior, new, exceptional)
8
kinky(adjective, happy, perfect, unusual)
8
mind-boggling(adjective, strange, amazing, astonishing)
8
rare(adjective, strange, exceptional, special)
7
preternatural(adjective, superior, strange, exceptional)
7
unlikely(adjective, strange, superb, amazing)
7
unsubstantial(adjective, gentle, strange, fantasy)
6
unheard-of(adjective, unusual, strange, superb)
5
unparalleled(adjective, superior, new, exceptional)
4
ideal(adjective, happy, perfect, superior)
4
superhuman(adjective, unusual, strange, wonderful)
4
unequalled(adjective, excellent, obscure, superior)
3
hypothetical(adjective, excellent, obscure, superior)
3
irregular(adjective, unusual, strange, wonderful)
3
sublime(adjective, excellent, obscure, wonderful)
3
supernatural(adjective, obscure, superior, superb)
3
theoretical(adjective, excellent, obscure, superior)
3
transcendent(adjective, great, perfect, super)
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APASmart Define. (2016). fantastic thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/fantastic/thesaurus/synonyms
ChicagoSmart Define. 2016. "fantastic thesaurus" https://smartdefine.org/fantastic/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, fantastic thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/fantastic/thesaurus/synonyms>.
MLASmart Define. "fantastic thesaurus" 30 March 2016. Web. 30 September 2026. <https://smartdefine.org/fantastic/thesaurus/synonyms>