The meaning of INFERNAL is of or relating to a nether world of the dead. How to use infernal in a sentence.

INFERNAL definition: hellish; fiendish; diabolical. See examples of infernal used in a sentence.

Serious and unpleasant (Definition of infernal from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

3 meanings: 1. of or relating to an underworld of the dead 2. deserving hell or befitting its occupants; diabolic; fiendish 3..... Click for more definitions.

1. hellish; fiendish; diabolical: an infernal plot. 2. extremely troublesome, annoying, etc.; outrageous: an infernal nuisance. 3. of, inhabiting, or befitting hell or the underworld.

Jan 20, 2026 · Adjective infernal (comparative more infernal, superlative most infernal) Of or relating to hell, or the world of the dead; hellish. (by extension) Of or relating to a fire or inferno. Stygian, …

Definition of infernal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

There are 11 meanings listed in OED's entry for the word infernal, three of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

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 …

Infernal adjective 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