diabolical
adjective C2- Of or concerning the devil: devilish, satanic.
- Extremely wicked or cruel. · a diabolical plan
- (Devilishly) cunning or devious.
- Crazy, wild (sometimes especially due to being unexpected or surprising).
From the library
But the man had hereditary tendencies of the most diabolical kind.
"The old fellow looked diabolical, and I really thought he was about to attack me.
“The original hound was material enough to tug a man’s throat out, and yet he was diabolical as well.”
“In your opinion there is a diabolical agency which makes Dartmoor an unsafe abode for a Baskerville—that is your opinion?”
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