Synonyms|139Antonyms|25|Broader|0Narrower|0Related|44
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inconstant(fickle, untrustworthy, unprincipled)
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knavish
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lubricious(fickle, untrustworthy, unprincipled, dirty-dealing)
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machiavellian
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mercentary(fickle, untrustworthy, unprincipled, dirty-dealing)
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moonlighting(fickle, untrustworthy, unprincipled, dirty-dealing)
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not true to(expression, idiom, fickle, untrustworthy, unprincipled)
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of bad faith(expression, idiom, fickle, untrustworthy, unprincipled)
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on the QT(expression, idiom, fickle, untrustworthy, unprincipled)
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on the quiet(expression, idiom, fickle, untrustworthy, unprincipled)
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perjurious(fickle, untrustworthy, unprincipled, dirty-dealing)
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perverse
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pharisaic
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polygamous(fickle, untrustworthy, unprincipled)
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quicksilver(fickle, untrustworthy, unprincipled, dirty-dealing)
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roguish
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sly
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snake in grass(expression, idiom, fickle, untrustworthy, unprincipled)
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stop-at-nothing(fickle, untrustworthy, unprincipled, dirty-dealing)
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stop at nothing(expression, idiom, fickle, untrustworthy, unprincipled)
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APASmart Define. (2015). falsehearted thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/falsehearted/thesaurus/synonyms
ChicagoSmart Define. 2015. "falsehearted thesaurus" https://smartdefine.org/falsehearted/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, falsehearted thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/falsehearted/thesaurus/synonyms>.
MLASmart Define. "falsehearted thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/falsehearted/thesaurus/synonyms>