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)

Dec 24, 2025 · 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 …

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.

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

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.

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.

Infernal definition: Fiendish; diabolical.

always used before a noun 1 literary : of or relating to hell the infernal regions of the dead 2 informal + old-fashioned : very bad or unpleasant