170 entries under adjective topic. ×

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ostensible(fake, counterfeit, sham, phony)
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pretend(fake, counterfeit, sham, phony)
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pretended(fake, counterfeit, dishonest, sham)
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put-on(noun, fake, false, counterfeit)
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recreant(false, deceitful, lying, untruthful)
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sanctimonious
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seeming(fake, counterfeit, sham, phony)
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simulated(fake, counterfeit, sham, phony)
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sinister(false, deceitful, lying, untruthful)
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sneaking(false, deceitful, lying, untruthful)
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so-called(fake, counterfeit, sham, phony)
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substitute(fake, counterfeit, sham, phony)
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swindling(false, deceitful, lying, untruthful)
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synthetic(fake, counterfeit, sham, phony)
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time-serving
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traitorous(false, deceitful, lying, untruthful)
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ungenuine
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unreliable(wrong, false, dishonest, deceitful)
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unsubstantiated(untrue, illogical, deceptive, unsupported)
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villainous(false, deceitful, lying, untruthful)
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APASmart Define. (2015). mendacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/mendacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "mendacious thesaurus" https://smartdefine.org/mendacious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, mendacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/mendacious/thesaurus/synonyms>.
MLASmart Define. "mendacious thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/mendacious/thesaurus/synonyms>