1 Relating to or characteristic of hell or the underworld.
2 informal attributive Irritating and tiresome (used for emphasis)
Late Middle English: from Old French, from Christian Latin infernalis, from Latin infernus ‘below, underground’, used by Christians to mean ‘hell’, on the pattern of inferni (masculine plural) ‘the shades’ and inferna (neuter plural) ‘the lower regions’.
That region called infernal
Elicits a sense of nocturnal.
Though, if you there retire,
It’s thought you’ll find just fire.
With that scene in your mind
I wonder why, in matching kind,
It’s opposite, empyrean aerie,
Is also described as fiery.