正せい妻さい

noun

legal wife; lawful wife

Refers to a wife recognized by law or formal marriage, as opposed to a mistress or common-law partner.

• 彼かれは正せい妻さいのほかに愛あい人じんがいるらしい。

  He seems to have a mistress besides his legal wife.

noun

first wife (in polygamy)

Used in contexts of polygamy to distinguish the primary wife from secondary wives or concubines.

• 歴れき史しドラマでは、正せい妻さいと側そく室しつの争あらそいがよく描えがかれる。

  Historical dramas often depict conflicts between the first wife and concubines.