What is the meaning of Infernal?

Of or relating to hell, or the world of the dead; hellish.

Of or relating to a fire or inferno.

Stygian, gloomy.

Diabolical or fiendish.

Very annoying; damned.

An inhabitant of the infernal regions, a demon.

hell; infernal

infernal, hellish, awful, terrible

infernal (relating to hell)

hellish; infernal (from or relating to hell)

diabolical; evil; infernal

infernal

hell; infernal (of or relating to hell)

infernal, hellish (diabolical, fiendish)

infernal, hellish, hellacious, hell of (very annoying, damned)

Source: wiktionary.org