Status conditions, abilities, and effects can give a character Advantage or Disadvantage on a roll.

Advantage

When a character has Advantage on a roll, after the dice are rolled for the skill check, roll the dice a second time and use the higher of the two values to figure result points.

Disadvantage

When a character has Disadvantage on a roll, after the dice are rolled for the skill check, roll the dice a second time and use the lower of the two values to figure result points.

If more than one condition, ability, or effect gives Advantage or Disadvantage, the effect is not applied multiple times. If both Advantage and Disadvantage are applied at the same time, the two effects cancel each other out and neither effect is applied. Every instance of Advantage or Disadvantage must be removed or canceled to remove the effect.