FTK definition by Slang.net
This page explains what the acronym "FTK" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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Gamers use FTK to mean "for the kill." When you see this acronym in in-game chat, it means a player is moving in to kill one or more enemies.
For example, in a MOBA, a player might send "going FTK, could use backup" when they're about to charge an opposing champion. Or, in an FPS, a player might say "let's go FTK on that sniper" when they want you to help them frag an opposing sniper.