infernal

(noun) an inhabitant of Hell. Examples: "His roar made the infernals quake."

(adj) characteristic of or resembling Hell. Examples: "Infernal noise." "Infernal punishment."

(adj) extremely evil or cruel; expressive of cruelty or befitting hell. Synonyms: demonic, diabolic, diabolical, fiendish, hellish, satanic, unholy. Examples: "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."

(adj) expletives used informally as intensifiers. Synonyms: blasted, blame, blamed, blessed, damn, damned, darned, deuced, goddam, goddamn, goddamned. Examples: "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."

(adj) of or pertaining to or characteristic of a very uncontrolled and intense fire. Examples: "Infernal heat."

(adj) being of the underworld. Synonyms: infernal (vs. supernal). Examples: "Infernal regions."