Weakness

Effect: Weakness is a condition that makes a character deal 66% less damage in melee combat.

Sources: These are the skills that can induce weakness:
 * Axe Twist
 * Desperation Blow
 * Devastating Hammer
 * Enfeeble
 * Enfeebling Blood
 * Enervating Charge
 * Staggering Blow
 * Virulence
 * skills that can transfer conditions

Removal: Weakness naturally expires after some time, with the exact duration depending on the source. It can be negated earlier by equipment with the Quick Recovery from Weakness mod or by skills that remove or transfer conditions.

Skills that involve Weakness in other ways:
 * Heavy Blow
 * Stoning