2
not true(expression, adjective, wrong, false, unpredictable)
2
not true to(expression, adjective, idiom, false, disloyal)
2
of bad faith(expression, adjective, idiom, false, disloyal)
2
out(bad, wrong, false, incorrect, inexact)
2
perjured(adjective, dishonest)
2
pretend(adjective, fake, false, counterfeit, mock)
2
questionable(adjective, false, dishonest, deceitful, unpredictable)
2
renegade
2
seditious(adjective, untrustworthy, treacherous, unfaithful, disaffected)
2
simulated(adjective, fake, false, counterfeit, mock)
2
snide(noun, adjective, fake, deception, false)
2
so-called(adjective, fake, deception, counterfeit, mock)
2
sophistical(adjective, bad, wrong, fake, false)
2
sophisticated
2
surreptitious(deception, untruth)
2
synthetic(adjective, fake, false, counterfeit, mock)
2
two-timing(adjective, false, dishonest, deceitful, unreliable)
2
unfactual
2
unpatriotic(adjective, untrustworthy, treacherous, unfaithful, disloyal)
2
unsubstantial
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APASmart Define. (2016). untrue thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/untrue/thesaurus/synonyms
ChicagoSmart Define. 2016. "untrue thesaurus" https://smartdefine.org/untrue/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, untrue thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/untrue/thesaurus/synonyms>.
MLASmart Define. "untrue thesaurus" 4 March 2016. Web. 25 September 2026. <https://smartdefine.org/untrue/thesaurus/synonyms>