55 entries under touchy topic. ×

40
treacherous(adjective, mean, hard, wrong, continue)
18
unscrupulous(adjective, mean, hard, evil, rough)
8
evil(adjective, mean, bad, hard, rough)
6
malicious(adjective, mean, bad, hard, evil)
5
dirty(adjective, hard, rough, nasty, rude)
5
knavish(adjective, hard, evil, rough, nasty)
4
dishonorable(adjective, mean, bad, hard, evil)
4
vicious(adjective, hard, evil, rough, nasty)
3
hostile(adjective, hard, evil, rough, nasty)
3
nasty(adjective, hard, rough, rude, cruel)
3
rotten(adjective, hard, evil, rough, nasty)
2
churlish(adjective, hard, rough, nasty, rude)
2
dangerous(adjective, hard, evil, rough, nasty)
2
despicable(adjective, hard, evil, rough, nasty)
2
vile(adjective, hard, evil, rough, nasty)
1
bad-tempered(adjective, hard, evil, rough, nasty)
1
callous(adjective, hard, evil, rough, nasty)
1
cantankerous(adjective, hard, evil, rough, nasty)
1
contemptible(adjective, hard, evil, rough, nasty)
1
difficult(adjective, hard, evil, rough, nasty)
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APASmart Define. (2016). perfidious thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/perfidious/thesaurus/synonyms
ChicagoSmart Define. 2016. "perfidious thesaurus" https://smartdefine.org/perfidious/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, perfidious thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/perfidious/thesaurus/synonyms>.
MLASmart Define. "perfidious thesaurus" 4 March 2016. Web. 20 September 2026. <https://smartdefine.org/perfidious/thesaurus/synonyms>