How do you write dear in Russian?

There isn't a direct translation for "dear" in Russian that works in all situations like it does in English. It depends on the context and who you are addressing:

Formal:

* Уважаемый/Уважаемая (Uvajaemy/Uvajaemaja): This is the most formal way to address someone, similar to "Dear Sir/Madam" in English.

* Дорогой/Дорогая (Dorogoy/Dorogaya): This is also formal, but slightly less so than "Уважаемый/Уважаемая." You would use it for someone you know slightly or have a professional relationship with.

Informal:

* Дорогой/Дорогая (Dorogoy/Dorogaya): This is the most common way to address a friend, family member, or someone you are close to.

* Милый/Милая (Mily/Milaja): This is a more affectionate way to address someone, similar to "sweetheart" or "darling" in English.

* Любимый/Любимая (Lyubimy/Lyubimaja): This is very affectionate and implies a romantic relationship.

Example:

* Уважаемый господин Иванов (Uvajaemy gospodin Ivanov): Dear Mr. Ivanov (formal)

* Дорогой Сергей (Dorogoy Sergey): Dear Sergey (informal)

* Милая Маша (Milaja Masha): Dear Masha (affectionate)

It's always best to be mindful of your relationship with the person you are addressing and choose the appropriate level of formality.