Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English impregnate
English impregn (mention)
Middle French imprégner (derived)
Old French enpreignier (derived)

English impregnable (suffix)
English impregnant (affix)
English reimpregnate (prefix)
English pre-impregnate (prefix)
English impregnator (suffix)
English impregnatable (suffix)
English impregnateth (suffix)