Stun

Stun is a detrimental status effect which prevents any actions for the duration, interrupting any action in progress.

Player actions inflicting Stun:

•   Shield Bash - Gladiator / Paladin Action (has a longer stun duration)
•   Holy,   Holy III - White Mage action
•   Bomb Toss - Blue Mage
•   Faze - Blue Mage
•   Sticky Tongue - Blue Mage
•   Perpetual Ray - Blue Mage
•   Tatami-gaeshi - Blue Mage
•   Low Blow - Tank Role Action
•   Leg Sweep - Melee DPS Role Action
•   Tranquilizer L - Logos Action

Terror is functionally identical to Stun in most contexts.