75 entries under spare topic. ×

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lone(unusual, strange, single, abnormal)
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more than enough(expression, adjective, idiom, reserve)
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not needed(expression, extra)
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residual
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single(unusual, strange, abnormal)
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singular(unusual, strange, single, abnormal)
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sole(unusual, strange, single, abnormal)
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solitary(unusual, strange, single, abnormal)
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standby(adjective, extra, replacement, temporary)
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superfluent
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too much(expression, extra)
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unconsumed(unusual, strange, irregular, single)
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unitary(unusual, strange, irregular, single)
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unmatched uneven(expression, unusual, strange, irregular)
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unpaired(unusual, strange, irregular, single)
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APASmart Define. (2015). additional thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/additional/thesaurus/synonyms
ChicagoSmart Define. 2015. "additional thesaurus" https://smartdefine.org/additional/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, additional thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/additional/thesaurus/synonyms>.
MLASmart Define. "additional thesaurus" 30 July 2015. Web. 23 September 2026. <https://smartdefine.org/additional/thesaurus/synonyms>