Irish aimsir

← Breton amzer (cognate)

← Proto-Celtic *amsterā (inherited)

← Welsh amser (cognate)

← Manx emshir (cognate)

← Old Irish aimser (inherited)

→ Breton amzer (cognate)

→ Irish nua-aimseartha (affix)

→ Irish ceannaimsir (affix)

→ Irish gearraimsir (prefix)

→ Irish aimseartha (affix)

→ Irish anaimsir (affix)

→ Manx emshir (cognate)