Definition of cara sposa in English:
cara sposa
noun ˌkɑːrə ˈspəʊsəˌkɑːrə ˈspəʊzə
‘Dear wife’; a wife or close female companion.
Origin
Mid 18th century; earliest use found in David Garrick (1717–1779), actor and playwright. From Italian cara sposa from cara dear + sposa.