Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish aithin
Irish aithníonn ciaróg ciaróg eile (link)
Irish aithneann (link)
Irish aithniú (link)
Irish aithnigh (alter)
Irish (alter)
Irish Cois Fharraige (alter)
Irish so-aitheanta (link)
Irish do (link)
Proto-Indo-European *ǵneh₃- (root)
Middle Irish [[aithnid]], [[aithnigid]], [[aithintigid]] (inherited)
Middle Irish aithne (mention)
Old Irish ad·gnin (derived)
Old Irish [[aithnid]], [[aithnigid]] (inherited)
Old Irish aithne (mention)

Irish so-aitheanta (affix)
Irish aithneach (suffix)
Irish aitheantóir (affix)