Designating what lies, or is imagined as lying, beneath the earth; of, belonging to, or native to hell or the underworld. See also nether region, n.…

Of or belonging to hell; infernal, hellish.

Of or belonging to the world or ‘regions’ below, i.e. to the realm of the dead in ancient mythology, or the abode of evil spirits in Jewish and…

= infernal, adj.

Of, belonging to, or relating to hell or the infernal regions; infernal.

Of, resembling, or characteristic of hell; hellish, infernal, devilish. In later use colloquial or poetic.

Of the nature of, or belonging to, Avernus; infernal.

Of or characteristic of hell; hellish, infernal.

= subterranean, adj. 2.

Of, relating to, or suggestive of the god Pluto, or the underworld which he was believed to rule; infernal, demonic.

Of or relating to Acheron (see Acheron, n.); infernal, hellish; dark, gloomy. Also as n.

= Plutonic, adj. 1.

Infernal, hellish.

Existing, belonging to, or characteristic of hell or the underworld; infernal.

= Plutonic, adj. 1. Also, by extension: dark, gloomy.

= Acherontic, adj.

Infernal; = subterranean, adj. 2.

Infernal; = subterranean, adj. 2. Now rare.

of, pertaining to, or of the nature of Tophet.

Of, relating to, or characteristic of Pandemonium; infernal; (now in extended use) disorderly, raucous, noisy.

Of or relating to hell or the underworld; infernal. Also: underground, subterranean. Cf. supermundane, adj.

Infernal; = subterranean, adj. 2. Now rare.

Of or relating to the underworld.

= pandemoniac, adj. 1.

Of, relating to, or suggestive of the underworld of the ancient Greeks, or the mythical river Acheron (see Acheron, n.); infernal, hellish; dark…

Lying beyond Acheron, a fabled river of the infernal regions; cf. trans-Stygian, adj.

= Avernal, adj.

That is on the other side of the Styx; infernal. (Cf. transacherontic, adj.)