53 entries under special topic. ×

2
rare(adjective, light, thin, unusual, exceptional)
2
strange(adjective, light, thin, unusual, exceptional)
2
uncommon(adjective, light, thin, extraordinary, unusual)
1
exceptional(light, thin, extraordinary, unusual)
1
extraordinary(light, thin, unusual, strange, exceptional)
1
few(light, thin, unusual, rare)
1
odd(extraordinary, unusual, exceptional, rare)
1
remarkable(light, thin, extraordinary, unusual, exceptional)
1
scarce(light, thin, unusual, rare)
1
seldom(light, thin, unusual, rare)
1
singular(light, thin, extraordinary, unusual, strange)
1
sporadic(light, thin, unusual, rare)
1
unimaginable(light, thin, doubtful, rare)
1
unthinkable(light, thin, extraordinary, unusual, strange)
1
unusual(light, thin, extraordinary, exceptional)
1
unwonted(light, thin, extraordinary, unusual, strange)
0
aberrant(unusual, odd, rare, bizarre)
0
abnormal(unusual, odd, rare, bizarre)
0
anomalous(unusual, rare)
0
arcane(unusual, rare)
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APASmart Define. (2013). unheard of thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unheard_of/thesaurus/synonyms
ChicagoSmart Define. 2013. "unheard of thesaurus" https://smartdefine.org/unheard_of/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, unheard of thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unheard_of/thesaurus/synonyms>.
MLASmart Define. "unheard of thesaurus" 19 May 2013. Web. 30 September 2026. <https://smartdefine.org/unheard_of/thesaurus/synonyms>