65 entries under adjective topic. ×

18
untrustworthy(open, honest, false, doubtful)
14
dishonest(good, open, honest, false)
7
disloyal(loyal, unfaithful)
7
unreliable(clear, strong, false, true)
6
deceitful(dishonest, insincere)
6
treacherous
4
undependable(false, doubtful, responsible, irresponsible)
4
devious
4
irresponsible(false, careless, doubtful, reckless)
4
untruthful(open, false, doubtful, truthful)
3
lying(false, doubtful)
2
unfaithful(faithful, disloyal, adulterous)
1
dishonorable
1
doubtful
1
fly-by-night(unreliable, shady)
1
fraudulent(open, genuine)
1
shady
1
suspect(verb, doubtful)
1
crooked
1
dubious
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APASmart Define. (2015). trustworthy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/trustworthy/thesaurus/antonyms
ChicagoSmart Define. 2015. "trustworthy thesaurus" https://smartdefine.org/trustworthy/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, trustworthy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/trustworthy/thesaurus/antonyms>.
MLASmart Define. "trustworthy thesaurus" 24 October 2015. Web. 29 September 2026. <https://smartdefine.org/trustworthy/thesaurus/antonyms>