65 entries under suspicious topic. ×

22
questionable(adjective, honest, unusual, strange, corrupt)
19
dubious(adjective, unusual, strange, corrupt, uncertain)
18
dishonest(adjective, bad, wrong, fake, false)
18
suspect(verb, adjective, honest, uncertain, doubtful)
17
fishy(adjective, bad, wrong, fake, honest)
17
shifty(adjective, nasty, unpleasant, false, corrupt)
15
doubtful(adjective, open, honest, unusual, strange)
14
crooked(adjective, bad, wrong, false, corrupt)
11
infamous(adjective, vile, shameful, dishonorable)
11
unscrupulous(adjective, bad, wrong, false, corrupt)
11
untrustworthy(adjective, false, corrupt, uncertain, dishonest)
10
tricky(adjective, false, corrupt, dishonest, immoral)
9
devious(adjective, corrupt, dishonest, immoral, cunning)
9
slippery(adjective, bad, wrong, false, dishonest)
9
underhand(adjective, bad, wrong, false, corrupt)
8
fly-by-night(adjective, bad, wrong, uncertain, dishonest)
8
fraudulent(adjective, fake, false, counterfeit, corrupt)
8
uncertain(adjective, honest, doubtful, unsettled, vague)
8
unethical(adjective, bad, wrong, informal, corrupt)
7
disgraceful(adjective, low, corrupt, shameful)
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APASmart Define. (2016). shady thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/shady/thesaurus/synonyms
ChicagoSmart Define. 2016. "shady thesaurus" https://smartdefine.org/shady/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, shady thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/shady/thesaurus/synonyms>.
MLASmart Define. "shady thesaurus" 29 February 2016. Web. 25 September 2026. <https://smartdefine.org/shady/thesaurus/synonyms>