extremely evil or cruel; expressive of cruelty or befitting hell;
"something demonic in him--something that could be cruel"
"fires lit up a diabolic scene"
"diabolical sorcerers under the influence of devils"
"a fiendish despot"
"hellish torture"
"infernal instruments of war"
"satanic cruelty"
"unholy grimaces"
expletives used informally as intensifiers;
"he's a blasted idiot"
"it's a blamed shame"
"a blame cold winter"
"not a blessed dime"
"I'll be damned (or blessed or darned or goddamned) if I'll do any such thing"
"he's a damn (or goddam or goddamned) fool"
"a deuced idiot"
"an infernal nuisance"
of or pertaining to or characteristic of a very uncontrolled and intense fire;