54 entries under fickle topic. ×

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bigamous(untrustworthy, unprincipled)
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changeful(untrustworthy, unprincipled, dirty-dealing)
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committing perjury(expression, untrustworthy, unprincipled, dirty-dealing)
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dirty dealing(expression, dishonest, deceitful, untrustworthy)
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disloyal(untrustworthy, unprincipled, dirty-dealing)
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double dealing(expression, rotten, untrustworthy, shady)
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extracurricular(untrustworthy, unprincipled, dirty-dealing)
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fair-weather(untrustworthy, unprincipled)
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falsehearted(untrustworthy, unprincipled, dirty-dealing)
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fly by night(expression, idiom, untrustworthy, unprincipled)
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foresworn(untrustworthy, unprincipled, dirty-dealing)
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lying(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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perjurious(untrustworthy, unprincipled, dirty-dealing)
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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(expression, idiom, untrustworthy, unprincipled)
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APASmart Define. (2015). unethical thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unethical/thesaurus/synonyms
ChicagoSmart Define. 2015. "unethical thesaurus" https://smartdefine.org/unethical/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unethical thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unethical/thesaurus/synonyms>.
MLASmart Define. "unethical thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/unethical/thesaurus/synonyms>