58 entries under fickle topic. ×

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fair-weather(untrustworthy, unprincipled)
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fly by night(expression, idiom, untrustworthy, unprincipled)
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lubricious(untrustworthy, unprincipled, dirty-dealing)
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mercentary(untrustworthy, unprincipled, dirty-dealing)
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on the QT(expression, idiom, untrustworthy, unprincipled)
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on the quiet(expression, idiom, untrustworthy, unprincipled)
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polygamous(untrustworthy, unprincipled)
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quicksilver(untrustworthy, unprincipled, dirty-dealing)
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snake in grass(expression, idiom, untrustworthy, unprincipled)
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stop-at-nothing(untrustworthy, unprincipled, dirty-dealing)
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stop at nothing(expression, idiom, untrustworthy, unprincipled)
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sub-rosa(untrustworthy, unprincipled, dirty-dealing)
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trustless(untrustworthy, unprincipled)
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unassured(untrustworthy, unprincipled)
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under cover(expression, untrustworthy, unprincipled, dirty-dealing)
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untrusty(untrustworthy, unprincipled)
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yo-yo(untrustworthy, unprincipled, dirty-dealing)
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yoyo(untrustworthy, unprincipled, dirty-dealing)
<123>
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APASmart Define. (2016). perfidious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/perfidious/thesaurus/synonyms
ChicagoSmart Define. 2016. "perfidious thesaurus" https://smartdefine.org/perfidious/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, perfidious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/perfidious/thesaurus/synonyms>.
MLASmart Define. "perfidious thesaurus" 4 March 2016. Web. 27 September 2026. <https://smartdefine.org/perfidious/thesaurus/synonyms>