Irish ársa

← Proto-Celtic *ɸarstā- (inherited)

← Scottish Gaelic àrsaidh (cognate)

← Proto-Indo-European *steh₂- (root)

← Proto-Indo-European [[*per-]], [[*pr-]] (inherited)

← Proto-Indo-European *steh₂- (mention)

← Old Irish arsaid (inherited)

→ Irish bréagársa (affix)

→ Irish anársa (affix)

→ Scottish Gaelic àrsaidh (cognate)