7
unheard-of(adjective, excellent, strange, exceptional, marvelous)
6
arcane(adjective, unusual, strange, special, different)
6
astonishing(adjective, extraordinary, unusual, strange, exceptional)
6
distinct(adjective, characteristic, separate, simple, excellent)
6
egregious(adjective, severe, harsh, unusual, exceptional)
6
incredible(adjective, extraordinary, unusual, strange, exceptional)
6
quirky(adjective, unusual, wild, strange, crazy)
6
seldom(adjective, adverb, slight, unusual, strange)
6
single(adjective, characteristic, separate, cool, extraordinary)
6
sparse(adjective, slight, thin, strange, exceptional)
6
striking(extraordinary, unusual, exceptional, special, serious)
6
unimaginable(adjective, light, thin, wonderful, exceptional)
6
untypical(adjective, strange, typical, nonconforming)
5
conspicuous(adjective, great, solid, extraordinary, unusual)
5
far-out(adjective, extraordinary, unusual, strange, exceptional)
5
freaky(adjective, unusual, strange, odd, unique)
5
fresh(adjective, feature, new, different, unknown)
5
isolated(adjective, separate, simple, strange, exceptional)
5
kinky(adjective, unusual, strange, odd, unique)
5
marvelous(excellent, extraordinary, exceptional, special, brilliant)
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APASmart Define. (2016). uncommon thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/uncommon/thesaurus/synonyms
ChicagoSmart Define. 2016. "uncommon thesaurus" https://smartdefine.org/uncommon/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, uncommon thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/uncommon/thesaurus/synonyms>.
MLASmart Define. "uncommon thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/uncommon/thesaurus/synonyms>