Adjective
1. characteristic of or resembling hell;
"infernal heat and noise"2. 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"3. 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""tired or his everlasting whimpering""an infernal nuisance"4. relating to or inhabiting hell;
"his infernal majesty""infernal fires""infernal punishments"5. being of a lower world of the dead;
"infernal regions"