The word "you're" is a contraction of "you are" and can be substituted with various synonyms such as "you're," "you've," or "you have." Other synonyms of "you're" include "you exist," "you live," and "you stay." Additionally, you can use "yourself" or "your" to express possessiveness. There are also regional variations of "you're" that are used differently in different parts of the world. No matter what variation or synonym is used, make sure to use proper grammar rules and check for context and meaning, as it can greatly affect the tone and message being conveyed.