Synonyms|123Antonyms|5|Broader|1Narrower|0Related|19
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on the quiet(expression, idiom, fickle, untrustworthy, unprincipled)
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out of line(expression, adjective, idiom, unreliable)
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perambulant(itinerant, wayfaring)
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perambulatory(itinerant, wayfaring)
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perfidious(fickle, untrustworthy, unprincipled, dirty-dealing)
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perjurious(fickle, untrustworthy, unprincipled, dirty-dealing, sophistical)
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polygamous(fickle, untrustworthy, unprincipled)
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prevaricative
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quicksilver(fickle, untrustworthy, unprincipled, dirty-dealing)
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riding the rails(expression, idiom, itinerant, wayfaring)
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rootless(itinerant, wayfaring)
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scam
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semioccasional
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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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sub-rosa(fickle, untrustworthy, unprincipled, dirty-dealing)
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touring(itinerant, wayfaring)
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traitorous(fickle, untrustworthy, unprincipled, dirty-dealing)
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transient(adjective, passing, traveling, fleeting, tramper)
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APASmart Define. (2015). fly by night thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fly_by_night/thesaurus/synonyms
ChicagoSmart Define. 2015. "fly by night thesaurus" https://smartdefine.org/fly_by_night/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, fly by night thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fly_by_night/thesaurus/synonyms>.
MLASmart Define. "fly by night thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/fly_by_night/thesaurus/synonyms>