This, in all bluntness, is the term I use for all wives except the one whose name is on the marriage license (of which the law only allows one, as we all know). As much as it makes the hairs on the back of my neck stand on end to hear such a trite example of "Po-PolitikalKorrectskii" coming out of my mouth (if you know anyone who speaks Russian ask them what that phrase means; when they get through laughing they'll explain), it's legally accurate and it avoids negative attention from secular courts because it sounds all "new-agey" and "alternative."I think that if you were to describe your relationship technically in a modern court of law, you would call her your "de-facto partner", because that is the term in our culture that technically describes the legal situation.