4
mendacious
4
mischievous
4
nefarious(adjective, wicked, dishonest, immoral, rotten)
4
shifty
4
untrustworthy(adjective, false, dishonest, immoral, cunning)
4
vicious(adjective, hard, evil, rough, nasty)
3
artful
3
atrocious
3
bad
3
blackguardly
3
dishonorable(adjective, hard, evil, rough, nasty)
3
execrable
3
faithless(adjective, dishonest, immoral, cunning, rotten)
3
false
3
ingenious
3
mean(verb, adjective, nasty, rude, cruel)
3
slippery
3
untruthful
2
arch
2
arrant(adjective, dishonest)
11 years ago|14k views|share |citing 
APASmart Define. (2015). knavish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/knavish/thesaurus/synonyms
ChicagoSmart Define. 2015. "knavish thesaurus" https://smartdefine.org/knavish/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, knavish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/knavish/thesaurus/synonyms>.
MLASmart Define. "knavish thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/knavish/thesaurus/synonyms>