Paralysis is a basic negative status which renders a player or mob incapable of casting skills (except skills designed to work in these conditions) for a short moment. In technical terms, Paralysis forces the target into a "flinching" animation for a short moment, allowing the attacker to use skills with impunity. This status can be inflicted through normal attacks and skills at a certain chance, and this chance of paralyzing targets can be increased by equipping items that add Paralyze rate. On the other hand, decreasing the chance of being paralyzed requires equipping items that give Vitality or Paralyze Resist.
Take note that the effect of Restraint suffix has a different effect to that of Paralysis.