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)

This has been a race of extremes where crashes challenged us in the first week, infernal heat in the second and monstrous mountains in the third.

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 American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

infernal, adj. & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

WordReference Random House Learner's Dictionary of American English © 2025 in•fer•nal /ɪnˈfɜrnəl/ adj. fiendish; diabolical: an infernal plot. very troublesome; outrageous: an infernal …

Of or relating to a lower world of the dead. b. Of or relating to hell: infernal punishments; infernal powers. 2. Fiendish; diabolical: infernal instruments of war. 3. Abominable; awful: the infernal …