68 entries under unusual topic. ×

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anomalous(excellent, special, brilliant, rare)
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arcane(special, rare)
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beyond possibility(adjective, incredible)
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distinctive(special, rare)
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eccentric(extraordinary, exceptional, special, remarkable)
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exotic(special, rare)
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few(light, thin, special, rare)
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freakish(special, rare)
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incomparable(excellent, special, brilliant, rare)
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inimitable(special, rare)
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irregular(excellent, special, brilliant, 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(extraordinary, special, remarkable, rare)
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out of the way(expression, idiom, special, rare)
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outre(special, rare)
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queer(extraordinary, exceptional, special, remarkable)
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seldom(light, thin, special, rare)
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sporadic(light, thin, special, rare)
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APASmart Define. (2015). unthinkable thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unthinkable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unthinkable thesaurus" https://smartdefine.org/unthinkable/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unthinkable thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unthinkable/thesaurus/synonyms>.
MLASmart Define. "unthinkable thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/unthinkable/thesaurus/synonyms>