infernal

/ɪnˈfʌrnl/

/ɪnˈfʌnəl/

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”

   synonyms:

   evil

   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

   Stygian

   hellish

   antonyms:

   supernal

   being or coming from on high

   heavenly

   of or belonging to heaven or god
3. adjective

   extremely evil or cruel; expressive of cruelty or befitting hell
   “infernal instruments of war”

   synonyms: demonic, diabolic, diabolical, fiendish, hellish, satanic, unholy

   evil

   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”

   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”

   synonyms:

   cursed, curst

   deserving a curse; sometimes used as an intensifier