Super Smash Bros. Ultimate Guide Ultimate Glossary of Terms and Mechanics
Shield
The most basic and important defensive maneuver accomplished by holding down the Shield button. Incoming attacks are blocked, except grabs and (extremely rare) unblockable or shield-shattering moves. Releasing the Shield button just before an attack impacts results in a perfect shield, basically a universal parry allowing the defender to counterattack much faster than normal after blocking. See defense.