| ThisProto-Celtic entry containsreconstructed terms and roots. As such, the term(s) in this entry are not directlyattested, but are hypothesized to have existed based oncomparative evidence. |
FromProto-Indo-European*h₁epi(“near, on”). Originally a derived noun reworked into a preposition in Irish.
*eɸirom
*eɸirom n
| singular | dual | plural | |
|---|---|---|---|
| nominative | *efirom | *efirou | *efirā |
| vocative | *efirom | *efirou | *efirā |
| accusative | *efirom | *efirou | *efirā |
| genitive | *efirī | *efirous | *efirom |
| dative | *efirūi | *efirobom | *efirobos |
| locative | *efirei | *? | *? |
| instrumental | *efirū | *efirobim | *efirūis |