Here's a breakdown:
* Khun: A Thai honorific title used before a person's name, equivalent to "Mr.," "Ms.," or "Miss" in English. It's a respectful way to address someone.
Example:
* "Dear khun John" would be "Dear Mr. John" in English.
* "Dear khun Jane" would be "Dear Ms. Jane" in English.
Note: While "khun" is used for both men and women, it's not always necessary to use it. You might see someone addressed simply as "John" or "Jane" in a more informal setting.