20 entries under diabolical topic. ×

4
bad(adjective, nasty, heavy, uncertain, wicked)
4
demonic(adjective, evil, vile, wicked, infernal)
4
diabolic(adjective, evil, vile, wicked, crazed)
3
satanic(adjective, evil, vile, wicked, crazed)
2
demoniac(adjective, evil, vile, wicked, crazed)
2
fiendish(adjective, evil, vile, wicked, crazed)
2
unhallowed(adjective, evil, vile, wicked, crazed)
1
Mephistophelian(adjective, evil, vile, wicked, fiendish)
1
damnable(adjective, evil, vile, wicked, fiendish)
1
infernal(adjective, evil, vile, wicked, crazed)
1
nefarious(adjective, evil, vile, wicked, fiendish)
1
villainous(adjective, evil, vile, wicked, fiendish)
0
accursed(adjective, wicked, demonic)
0
brutish(adjective, wicked, demonic)
0
cloven-footed(adjective, wicked, demonic)
0
cursed(adjective, wicked, demonic)
0
detestable(adjective, wicked, demonic)
0
execrable(adjective, wicked, demonic)
0
hellborn(adjective, wicked, demonic)
0
iniquitous(adjective, wicked, demonic)
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APASmart Define. (2015). serpentine thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/serpentine/thesaurus/synonyms
ChicagoSmart Define. 2015. "serpentine thesaurus" https://smartdefine.org/serpentine/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, serpentine thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/serpentine/thesaurus/synonyms>.
MLASmart Define. "serpentine thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/serpentine/thesaurus/synonyms>