what is afk
The New Hacker's Dictionary(1.00 / 1 vote)Rate this definition: AFK. [MUD] Abbrev. for âAway From Keyboardâ. Used to notify others that you will be momentarily unavailable online. eg. âLet's not go kill that frost giant yet, I need to go AFK to make a phone callâ. Often MUDs will have a command to politely inform others of your absence when they try to talk with you.