Old Irish gnáth

← Proto-Celtic *gnātos (inherited)

← Proto-Indo-European *ǵneh₃- (root)

← Proto-Indo-European (inherited)

← Proto-Indo-European *ǵneh₃- (mention)

→ Irish gnáth (inherited)

→ Irish iontas (mention)

→ Irish gnás (mention)

→ Scottish Gaelic gnàth (inherited)

→ Sanskrit ज्ञात (cognate)

→ Old Irish gnáthach (suffix)