from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to a lower world of the dead.
- adj. Of or relating to hell: infernal punishments; infernal powers.
- adj. Fiendish; diabolical: infernal instruments of war.
- adj. Abominable; awful: the infernal racket of the jackhammers.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or relating to hell, or the world of the dead; hellish.
- adj. Of or relating to a fire or inferno.
- adj. Stygian, gloomy.
- adj. Diabolical or fiendish.
- adj. Very annoying; damned.
- n. An inhabitant of the infernal regions.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to or suitable for the lower regions, inhabited, according to the ancients, by the dead; pertaining to Pluto's realm of the dead, the Tartarus of the ancients.
- adj. Of or pertaining to, resembling, or inhabiting, hell; suitable for hell, or to the character of the inhabitants of hell; hellish; diabolical.
- n. An inhabitant of the infernal regions; also, the place itself.
from The Century Dictionary and Cyclopedia
- Pertaining to the lower regions, or regions of the dead, the Tartarus of the ancients.
- Pertaining to or resembling hell; inhabiting hell; suitable or appropriate to hell or its inhabitants; hellish; fiendish; diabolical: as, infernal cruelty.
- Devilish, satanic, fiendlike, nefarious.
- n. An inhabitant of hell or of the lower regions.
- n. A person or thing of an infernal character in any sense, or of supposed infernal appearance: specifically applied to a fire-ship, torpedo, infernal machine, or the like.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. extremely evil or cruel; expressive of cruelty or befitting hell
- n. an inhabitant of Hell
- adj. of or pertaining to or characteristic of a very uncontrolled and intense fire
- adj. expletives used informally as intensifiers
- adj. being of the underworld
- adj. characteristic of or resembling Hell
Middle English, from Old French, from Late Latin īnfernālis, from īnfernus, hell, from Latin, lower, underground; see n̥dher- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Old English, from Old French, from Late Latin infernalis, from infernus ("hell") (Wiktionary)