[ɪnˈfəːnl], (Adjective)

Definitions:
- relating to or characteristic of hell or the underworld
(e.g: the infernal regions)

- irritating and tiresome (used for emphasis)
(e.g: you're an infernal nuisance)


Phrases:

Origin:
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’