Synonyms|555Antonyms|195|Broader|8Narrower|1Related|1.8k

350 entries under adjective topic. ×

1
false-hearted(false, untrue, unfaithful, disloyal)
1
falsehearted(mean, bad, evil, base)
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faltering(unfaithful, disloyal)
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fanciful
1
felonious
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fink(dishonest, deceitful, unreliable, dependable)
1
fitful(uneven, unbalanced, unhinged)
1
fixed(dishonest, immoral, rotten, crooked)
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flighty(careless, immoral, thoughtless, reckless)
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fluctuant(uncertain, nervous, doubtful, shaky)
1
fluctuating(weak, false, uncertain, dishonest)
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foresworn(false, fickle, untrue, unprincipled)
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forsworn(mean, bad, base, false)
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foul(mean, bad, base, dishonest)
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frivolous
1
giddy(careless, immoral, thoughtless, uneven)
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gone to the dogs(expression, idiom, dishonest, immoral)
1
hollow(wrong, false, dishonest, unpredictable)
1
hopeless(unreliable, insecure, treacherous, incalculable)
1
imprecise(wrong, false, dishonest, incorrect)
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ChicagoSmart Define. 2016. "untrustworthy thesaurus" https://smartdefine.org/untrustworthy/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, untrustworthy thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/untrustworthy/thesaurus/synonyms>.
MLASmart Define. "untrustworthy thesaurus" 14 March 2016. Web. 1 October 2026. <https://smartdefine.org/untrustworthy/thesaurus/synonyms>