ínferi
ínferi, -órum m.
noun, 2nd declension
ín-fe-ri · /ˈin.fɛ.ri/
the dead, those below, the underworld
Always plural: literally those below. Ab ínferis means from among the dead, not from hell.
in English infernal, inferior
in the texts
Unde et mémores ínferis
external dictionary: Logeion