57 entries under unusual topic. ×

2
curious(adjective, special, rare, scarce)
2
unaccustomed(adjective, special, rare)
2
unconventional(adjective, special, rare, scarce)
2
uncustomary(adjective, excellent, special, brilliant)
2
unorthodox(adjective, special, rare)
1
aberrant(excellent, special, brilliant, unreliable)
1
eccentric(adjective, special, unreliable, rare)
1
fantastic(special, rare)
1
freakish(special, rare)
1
incomparable(excellent, special, brilliant, rare)
1
noteworthy(adjective, excellent, extraordinary, strange)
1
out of the ordinary(expression, adjective, idiom, strange)
1
special(adjective, excellent, extraordinary, certain)
1
unheard of(verb, expression, phrasal verb, special)
1
unimaginable(excellent, special, brilliant, rare)
1
unthinkable(excellent, special, brilliant, rare)
1
weird(adjective, special, rare, scarce)
0
anomalous(excellent, special, brilliant, rare)
0
arcane(special, rare)
0
distinctive(special, rare)
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APASmart Define. (2015). infrequent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/infrequent/thesaurus/synonyms
ChicagoSmart Define. 2015. "infrequent thesaurus" https://smartdefine.org/infrequent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, infrequent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/infrequent/thesaurus/synonyms>.
MLASmart Define. "infrequent thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/infrequent/thesaurus/synonyms>