Formal:
* מײַן ליבער/ליבע (mein libe/libe): This is the most literal translation, meaning "my dear" or "my beloved." It can be used for both men and women, but it is more formal.
Informal:
* מײַן טײַער/טײַערע (mein teyer/teyre): This is a more affectionate and informal version of "my dear," meaning "my precious" or "my darling."
* מײַן ליבלינג (mein libling): This means "my darling" or "my sweetheart" and is very affectionate.
Other Options:
* שיקער (shiker) - This is a more informal and playful term of endearment, meaning "sweetheart" or "honey."
* מײַן קינד (mein kind) - This literally means "my child," but it can be used affectionately for a loved one, similar to "my dear."
The best way to choose the right phrase depends on your relationship with the person and the tone you want to convey.