30 entries under excellent topic. ×

21
rare(adjective, weak, slight, poor)
18
uncommon(adjective, slight, thin, extraordinary)
16
unusual(adjective, extraordinary, exceptional, usual)
11
scarce(adjective, weak, slight, poor)
7
exceptional(adjective, extraordinary, unusual, strange)
7
singular(adjective, extraordinary, unusual, exceptional)
6
irregular(adjective, extraordinary, unusual, special)
6
odd(adjective, extraordinary, unusual, strange)
5
strange(adjective, extraordinary, unusual, exceptional)
4
extraordinary(adjective, unusual, strange, exceptional)
4
unprecedented(adjective, unusual, special, brilliant)
3
atypical(adjective, extraordinary, strange, special)
3
peculiar(adjective, unusual, special, brilliant)
3
remarkable(adjective, extraordinary, unusual, strange)
2
abnormal(adjective, extraordinary, unusual, strange)
2
phenomenal(adjective, extraordinary, strange, special)
2
uncustomary(adjective, unusual, special, brilliant)
1
aberrant(unusual, special, brilliant, unreliable)
1
incomparable(unusual, special, brilliant, rare)
1
noteworthy(adjective, extraordinary, unusual, strange)
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APASmart Define. (2015). infrequent thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/infrequent/thesaurus/synonyms
ChicagoSmart Define. 2015. "infrequent thesaurus" https://smartdefine.org/infrequent/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, infrequent thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/infrequent/thesaurus/synonyms>.
MLASmart Define. "infrequent thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/infrequent/thesaurus/synonyms>