Gamesense: a mental model of the game by which players can anticipate and pre-empt the actions of other players.
A CS:GO player with good gamesense will habitually keep their crosshairs at head height and aim at corners where an enemy is likely to emerge. They'll have an intuitive sense of how long it takes to run from one point on the map to another. They'll listen through walls for footsteps to try and decode where the enemy are, where they're headed to and what strategy they might be about to attempt.
To the uninitiated, it looks a lot like cheating - you peek through a window and instantly get headshotted before you've had any chance to react. To the guy who hit you, it's just basic gamesense - you did a predictable thing and he punished you for it.
Yeah, it feels like a dead giveaway when someone at higher ranks has near perfect but within the realm of believable gameplay from a mechanical standpoint (great aim control/accuracy, hitting lots of flick shots) but then they're running all over like a headless chicken, getting lost on the map, have no regard for positioning and angles when pushing or defending, just purely leveraging "skill" alone.
A CS:GO player with good gamesense will habitually keep their crosshairs at head height and aim at corners where an enemy is likely to emerge. They'll have an intuitive sense of how long it takes to run from one point on the map to another. They'll listen through walls for footsteps to try and decode where the enemy are, where they're headed to and what strategy they might be about to attempt.
To the uninitiated, it looks a lot like cheating - you peek through a window and instantly get headshotted before you've had any chance to react. To the guy who hit you, it's just basic gamesense - you did a predictable thing and he punished you for it.