56 entries under fickle topic. ×

1
unloyal(adjective, wrong, false, dishonest, dubious)
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adulterine(untrustworthy, unprincipled, dirty-dealing)
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adulterous(untrustworthy, unprincipled, dirty-dealing)
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amoral(untrustworthy, unprincipled, dirty-dealing)
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bigamous(untrustworthy, unprincipled)
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dirty-dealing(untrustworthy, unprincipled)
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dirty dealing(expression, untrustworthy, unprincipled, dirty-dealing)
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extracurricular(untrustworthy, unprincipled, dirty-dealing)
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fair-weather(untrustworthy, unprincipled)
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fly by night(expression, idiom, untrustworthy, unprincipled)
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foresworn(untrustworthy, unprincipled, dirty-dealing)
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lubricious(untrustworthy, unprincipled, dirty-dealing)
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mercentary(untrustworthy, unprincipled, dirty-dealing)
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moonlighting(untrustworthy, unprincipled, dirty-dealing)
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not true to(expression, idiom, untrustworthy, unprincipled)
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of bad faith(expression, idiom, untrustworthy, unprincipled)
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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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APASmart Define. (2015). untruthful thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/untruthful/thesaurus/synonyms
ChicagoSmart Define. 2015. "untruthful thesaurus" https://smartdefine.org/untruthful/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, untruthful thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/untruthful/thesaurus/synonyms>.
MLASmart Define. "untruthful thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/untruthful/thesaurus/synonyms>