In text messaging and online conversations, "rn" is an abbreviation for "right now". It is used to express immediacy and to specify an activity or status as being in the present. For example, someone might ask "What are you doing rn?" to inquire about what the person is currently doing. The abbreviation can be utilized in many ways, including if you are asking a question or telling someone what youre doing. It is a convenient spelling shortcut for kids to use.