Snapchat is a Social media platform which comes with many unique features that makes a snapchat unique concept. Nowadays, Snapchat is evolving and introducing new abbreviations to the users and FS is one of them but many of the Snapchat users don’t know what does FS mean on Snapchat. Well FS stands for ‘For Sure’ on Snapchat and it is used to confirm something or agree on someone’s thoughts.