Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish máthair
Proto-Celtic *mātīr (inherited)
Proto-Indo-European *méh₂tēr (inherited)
Old Irish máthir (inherited)

Breton moereb (cognate)
Welsh modryb (cognate)
Irish athair (link)
Irish seanmháthair (affix)
Irish leasmháthair (affix)
Irish ríonmháthair (affix)
Irish máthairchlár (affix)
Irish máthairab (affix)
Irish máthairtheanga (affix)
Irish máithrigh (suffix)