FSF means: The acronym IMspeak “Fuck Shit Fuck”, which is used to express intense anger or frustration. (in Community Dictionary, added by Balduino Medina)

What else does FSF mean?

  • Full Send Friday is an abbreviation. It’s used to refer to teenage boys who want girls to meet up. If you receive a message saying “fsf”, it means you have found a group that will not let you down. Do not mistakenly interpret this as “Female-seeking Female”. This is common error made by young women. PS. This term doesn’t only pertain to Fridays. (in Community Dictionary, added by Aaliyah Henry)
  • Established in 1985 by the Free Software Foundation FSF (Free Software Foundation), it promotes computer users’ right to copy, use, modify, redistribute, and study computer programs. FSF encourages free software development, especially the GNU operating systems, which are widely used in the GNULinux version. (in Community Dictionary, added by Imani Wells)