55 entries under special topic. ×

21
irregular(adjective, irregular, variable, broken)
16
uncommon(adjective, slight, thin, unusual, strange)
14
rare(adjective, slight, thin, unusual, exceptional)
12
infrequent(adjective, slight, thin, unusual, strange)
7
seldom(adjective, adverb, light, slight, thin)
6
few(adjective, light, thin, unusual, strange)
5
eccentric(adjective, unusual, irregular, unreliable)
5
odd(adjective, unusual, chance, irregular)
4
unusual(adjective, light, thin, exceptional, usual)
3
unorthodox(unusual, rare)
2
extraordinary(adjective, light, thin, unusual)
1
aberrant(unusual, unreliable, rare, uneven)
1
exceptional(light, thin, unusual, irregular)
1
unheard of(expression, light, thin, unusual)
0
abnormal(unusual, rare)
0
anomalous(unusual, rare)
0
arcane(unusual, rare)
0
bizarre(unusual, rare)
0
curious(unusual, rare)
0
distinctive(unusual, rare)
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APASmart Define. (2015). sporadic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sporadic/thesaurus/synonyms
ChicagoSmart Define. 2015. "sporadic thesaurus" https://smartdefine.org/sporadic/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, sporadic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sporadic/thesaurus/synonyms>.
MLASmart Define. "sporadic thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/sporadic/thesaurus/synonyms>