61 entries under special topic. ×

12
unique(adjective, wrong, excellent, unusual)
8
curious(adjective, unusual, wild, strange, exceptional)
6
rare(adjective, excellent, extraordinary, unusual, strange)
5
infrequent(adjective, excellent, extraordinary, unusual)
5
uncustomary(adjective, excellent, unusual, strange)
4
novel(adjective, unusual, rare, nonconforming)
4
unfamiliar(adjective, unusual, odd, rare)
4
unwonted(adjective, unusual, rare, unconventional)
3
exotic(adjective, unusual, rare)
3
fantastic(adjective, extraordinary, unusual, strange, wonderful)
2
egregious(unusual, rare, unconformity)
2
remarkable(adjective, excellent, unusual, strange)
2
unparalleled(adjective, unusual, rare)
2
unprecedented(adjective, excellent, unusual, brilliant)
1
out of the ordinary(expression, idiom, unusual, strange)
1
scarce(excellent, unusual, chance, brilliant)
0
arcane(unusual, rare)
0
brilliant(excellent, lively, unpredictable, changeable)
0
distinctive(unusual, rare)
0
extreme(adjective, unusual, rare, scarce)
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APASmart Define. (2016). irregular thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/irregular/thesaurus/synonyms
ChicagoSmart Define. 2016. "irregular thesaurus" https://smartdefine.org/irregular/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, irregular thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/irregular/thesaurus/synonyms>.
MLASmart Define. "irregular thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/irregular/thesaurus/synonyms>