fiendish
adjective
[ ˈfiːndɪʃ ]
• extremely cruel or unpleasant.
• "fiendish methods of torture"
Similar:
wicked,
cruel,
vicious,
evil,
nefarious,
unspeakable,
brutal,
brutish,
savage,
barbaric,
barbarous,
beastly,
inhuman,
murderous,
bloodthirsty,
ferocious,
ruthless,
heartless,
pitiless,
merciless,
black-hearted,
unfeeling,
malevolent,
malicious,
villainous,
malignant,
devilish,
diabolical,
hellish,
demonic,
satanic,
Mephistophelian,
ungodly,
odious,
base,
dastardly,
