Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish íol
Ancient Greek εἴδωλον (derived)
Ancient Greek εἶδος (mention)
Latin īdōlum (derived)
Old Irish ídal (inherited)
Old Irish ídol (mention)

Irish íoltóir (suffix)
Irish íoladhradh (compound)
Irish íolacht (suffix)