noun, used as a suffix
princess; consort
Used as a suffix in titles for royal or imperial consorts and princesses, e.g. 皇太子妃 (crown princess), 王妃 (queen consort). Not a standalone word for 'princess' in modern Japanese.
雅子さまは皇太子妃です。
Masako is the Crown Princess.
ダイアナ妃は世界中で愛された。
Princess Diana was loved around the world.