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

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

Dec 24, 2025 · 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, …

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.

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