Alias · Top Positions
Half-mounted
Also known as Quarter Mount — Bottom — the canonical term used on this site.
Training background: Colloquial — used when the position is the degraded mount rather than the deliberate transition
Informal — caught in the quarter mount
Half-mounted is a colloquial name for the quarter mount bottom position — loosely describing being caught partway into a mount.
Etymology. “Half-mounted” is informal vocabulary for the in-between state where the opponent has more than side control but not yet full mount. The label is approximate, naming the predicament rather than a precise position.
Mechanics. Escape requires destabilising the top player’s transitional control before it consolidates: bumping and turning unsettles the climbing knee so the bottom player can recover frames or guard, since a quarter mount left to settle becomes full mount, while one that is off-balanced early can be reversed back to a defensible position.
Cross-reference. “45-degree mount defence” is a sibling alias. Full mechanical coverage on Quarter Mount — Bottom.