The letter s is a short way to spell “yes.” While the more common way to say “yes” is “y”, the s is a quicker, less common option. While not widely known, the s is most useful for texting and online confirmations. Its meaning is similar to that of the ‘-‘ emoticon. Below, we will discuss some ways to use s in everyday life. But first, let’s take a look at some common uses for the letter s.