90 entries under textbook topic. ×

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undamaged(flawless, faultless)
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unequaled(flawless, faultless)
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unflawed(flawless, faultless)
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unimpaired(flawless, faultless)
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unmarred(flawless, faultless)
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unmixed(flawless, faultless)
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unspoiled(flawless, faultless)
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untainted(flawless, faultless)
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untarnished(flawless, faultless)
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utopian(flawless, faultless)
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APASmart Define. (2016). certain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/certain/thesaurus/synonyms
ChicagoSmart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, certain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>.
MLASmart Define. "certain thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms>