KS - What does KS mean in online gaming?

KS has 3 meanings. The most common is "Kill steal." See examples of how people use the terms.
In gaming, a KS (kill steal) is when one player swoops in to deal the final blow to an enemy another has been wearing down. Because players often earn points for kills, KSing is frowned upon.

MAYB – Mid America Youth Basketball

Taylor Swift and Travis Kelce timeline: From dating rumors to the

Kansas City, The Last of Us Wiki

Kansas, Flag, Facts, Maps, & Points of Interest

Kansas Department of Revenue - Pub. KS-1530 Tire Excise Tax

Taylor Swift attends Chiefs game; sits next to Donna Kelce

Online Gaming Statistics: 16 Facts that Will Blow You Away

Scrabble Is Not Just a Word Game - The New York Times

30 Things To Know About Kansas Before Moving There

Nova Aetas: Renaissance by Ludus Magnus Studio — Kickstarter

Wichita Thunder, Wichita, KS Professional Hockey

Chiefs radio announcer Mitch Holthus to miss game due to COVID