7
outlandish(adjective, obscure, strange, new, exceptional)
7
prodigious(adjective, excellent, unusual, exceptional, special)
6
strange(adjective, excellent, new, exceptional, marvelous)
6
marvelous(adjective, exceptional, original)
6
bizarre(adjective, strange, new, exceptional, marvelous)
6
miraculous(adjective, exceptional, original)
6
unfamiliar(adjective, obscure, new, exceptional, marvelous)
5
curious(adjective, extraordinary, unusual, exceptional, marvelous)
5
eccentric(adjective, unusual, strange, new, exceptional)
5
freakish(adjective, unusual, exceptional, special, original)
5
noteworthy(adjective, excellent, extraordinary, unusual, exceptional)
5
one-of-a-kind
5
outstanding(adjective, excellent, unusual, exceptional, marvelous)
5
unaccustomed(adjective, unusual, strange, new, special)
5
unmatched(noun, new, unique, incomparable)
4
aberrant(adjective, excellent, unusual, exceptional, special)
4
anomalous(adjective, excellent, unusual, exceptional, special)
4
exotic(adjective, unusual, strange, new, exceptional)
4
fabulous(adjective, exceptional)
4
fresh(adjective, unusual, new, fundamental, novel)
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APASmart Define. (2016). unprecedented thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unprecedented/thesaurus/synonyms
ChicagoSmart Define. 2016. "unprecedented thesaurus" https://smartdefine.org/unprecedented/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unprecedented thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unprecedented/thesaurus/synonyms>.
MLASmart Define. "unprecedented thesaurus" 15 January 2016. Web. 24 September 2026. <https://smartdefine.org/unprecedented/thesaurus/synonyms>