Irish uachtar

← Breton uhel (cognate)

← Proto-Celtic *ouxsterom (inherited)

← Welsh uchel (cognate)

← Welsh aruthr (mention)

← Scottish Gaelic uachdar (cognate)

← Scottish Gaelic uasal (cognate)

← Ancient Greek ὕψος (cognate)

← Manx eaghtyr (cognate)

← Proto-Indo-European *h₃ewp-s- (derived)

← Old Irish [[úachtar]], [[óchtar]] (inherited)

→ Irish uachtarán (affix)

→ Irish uachtarlann (affix)