Acherontical

Adjective

Acherontic

1. Of, pertaining to or resembling Acheron (one of the rivers located in the underworld according to ancient Greek mythology).
   • It was a Comedy, to see what a crowding (as if it had bene at a newe Play,) there was vpon the Acheronticque Strond,1607, Thomas Dekker, chapter 4, in A Knights Conjuring, London: William Barley
2. (figuratively) Of or pertaining to hell.
   • How did those Aegyptians storme, when Moses and Aaron, Crumwell and Cranmer came, to deliuer Gods Israel, from that Acheronticall ignorance?1623, George Langford, Search the Scriptures, London: John Clarke, Section 7, p. 43

   Synonyms:

   hellish, infernal, Plutonian, Tartarean, Hadean, helly, Plutonic, stygian, subtartarean

3. (figuratively) Lacking joy and comfort; nearing death.
   • Depart to blacke nights Acheronticke Cell,1599, John Weever, Epigrammes in the Oldest Cut, and Newest Fashion, London: Thomas Bushell, The Thirde Weeke, Epig. 7

   Synonyms:

   bleak, cheerless, dismal, gloomy, lugubrious, moribund