Things that come from Hell, or seem like they do, are infernal. If your father tells you to stop listening to that infernal music, he thinks your tunes are hellish on the ears.

The word infernal comes from infernus, the Latin word for underground. A related word is inferno which means a really big fire, the kind that you might find in Hell. Although it might be used to describe something really hot or something evil, infernal is usually used when someone is complaining about something they really don't like such as the infernal dog next door that keeps barking.

Definitions of infernal
  1. adjective
    characteristic of or resembling Hell
    infernal noise”
    infernal punishment”
  2. adjective
    being of the underworld
    infernal regions”
    morally bad or wrong
    chthonian, chthonic, nether
    dwelling beneath the surface of the earth
    Hadean, Plutonian, Tartarean
    of or relating to or characteristic of Hades or Tartarus
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    being or coming from on high
    of or belonging to heaven or god
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  3. adjective
    extremely evil or cruel; expressive of cruelty or befitting hell
    infernal instruments of war”
    synonyms: demonic, diabolic, diabolical, fiendish, hellish, satanic, unholy
    morally bad or wrong
  4. adjective
    of or pertaining to or characteristic of a very uncontrolled and intense fire
    infernal heat”
  5. noun
    an inhabitant of Hell
    “his roar made the infernals quake”
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    type of:
    dead person, dead soul, deceased, deceased person, decedent, departed
    someone who is no longer alive
  6. adjective
    expletives used informally as intensifiers
    “an infernal nuisance”
    cursed, curst
    deserving a curse; sometimes used as an intensifier
Word Family
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