199 entries under adjective topic. ×

2
retired(secret, sneaky, stealthy)
2
two-timing(bad, wrong, false, corrupt)
2
undisclosed(clandestine, underground)
2
unreliable(false, true, dishonest, deceitful)
2
venal(corrupt, dishonest, immoral, unprincipled)
2
vulpine
2
wrong(corrupt, dishonest, immoral, unwarranted)
1
Machiavellian
1
below the belt(wrong, dishonest, deceitful, unwarranted)
1
cheating(bad, wrong, false, corrupt)
1
contriving
1
counterfeit
1
delusive(mean, smooth, smart, false)
1
dirty-dealing(wrong, corrupt, dishonest, immoral)
1
disreputable(bad, wrong, false, dishonest)
1
double-crossing(bad, wrong, false, corrupt)
1
erratic(unpredictable, fickle, variable, ambiguous)
1
fly-by-night(bad, wrong, false, dishonest)
1
hush-hush(deceitful, secret, hidden, clandestine)
1
illegal(wrong, evil, corrupt, dishonest)
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APASmart Define. (2015). underhand thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/underhand/thesaurus/synonyms
ChicagoSmart Define. 2015. "underhand thesaurus" https://smartdefine.org/underhand/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, underhand thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/underhand/thesaurus/synonyms>.
MLASmart Define. "underhand thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/underhand/thesaurus/synonyms>