Latin er

← Ancient Greek χήρ (cognate)

← Ancient Greek χοῖρος (cognate)

← Ancient Greek ιρρε (mention)

← Proto-Indo-European *ǵʰḗr (inherited)

← Proto-Indo-European *ǵʰer- (mention)

← Proto-Indo-European *ǵʰóryos (mention)

← Proto-Italic *hēr (inherited)

← Latin ēricius (link)

← Latin R (link)

← Latin (mention)

← Latin (mention)

← Latin (mention)

← Latin (mention)

← Latin (mention)

← Latin (mention)

← Latin (mention)

← Latin (mention)

← Albanian derr (cognate)

→ Finnish är (derived)

→ Italian erre (inherited)