57 entries under unusual topic. ×

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egregious(special, rare)
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exotic(special, rare)
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extreme(adjective, exceptional, special, valuable)
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inimitable(special, rare)
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nondescript(special, rare)
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notable(excellent, special, brilliant, rare)
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novel(special, rare)
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original(adjective, special, rare, scarce)
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out of the way(expression, idiom, special, rare)
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outre(special, rare)
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outstanding(adjective, excellent, extraordinary, special)
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prodigious(adjective, excellent, extraordinary, special)
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queer(adjective, special, rare, scarce)
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startling(special, rare)
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superior(adjective, excellent, extraordinary, special)
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surprising(adjective, special, rare, scarce)
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very different(expression, 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>