The term sus comes from player slang for suspicious, shortened during fast text and voice chat in Among Us, the social deduction game released by Innersloth in 2018. When the game surged in popularity in 2020, clips and screenshots carried the word far beyond its lobbies, and sus became a general reaction to anything shady or out of place. Short sound versions labeled in other languages, including the Swedish sus ljudet, spread on soundboards and in short-form edits, where the cue now signals an accusation even without any game footage present in the edit.