Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English retentive
Middle French rétentif (borrowed)
Old French retentif (derived)
Proto-Indo-European *ten- (root)
Latin retentus (derived)

English irretentive (prefix)
English unretentive (prefix)
English retentively (suffix)
English retentiveness (suffix)
English retentivity (suffix)
English nonretentive (prefix)
English gastroretentive (prefix)
English stereoretentive (prefix)