12 entries under expression topic. ×

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committing perjury(fickle, untrustworthy, unprincipled, dirty-dealing)
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constituting treason
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dirty dealing(fickle, untrustworthy, unprincipled, dirty-dealing)
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double dealing(fickle, untrustworthy, unprincipled, dirty-dealing)
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fly by night(idiom, fickle, untrustworthy, unprincipled)
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not true to(idiom, fickle, untrustworthy, unprincipled)
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of bad faith(idiom, fickle, untrustworthy, unprincipled)
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on the QT(idiom, fickle, untrustworthy, unprincipled)
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on the quiet(idiom, fickle, untrustworthy, unprincipled)
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snake in grass(idiom, fickle, untrustworthy, unprincipled)
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stop at nothing(idiom, fickle, untrustworthy, unprincipled)
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under cover(fickle, untrustworthy, unprincipled, dirty-dealing)
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APASmart Define. (2015). treasonous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/treasonous/thesaurus/synonyms
ChicagoSmart Define. 2015. "treasonous thesaurus" https://smartdefine.org/treasonous/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, treasonous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/treasonous/thesaurus/synonyms>.
MLASmart Define. "treasonous thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/treasonous/thesaurus/synonyms>