impairment

noun

1. (countable, uncountable)The result of being impaired.
2. (countable, uncountable)A deterioration or weakening.

   “We determined that the car driver’s transportation of multiple teen passengers, limited driving experience, and likely impairment from effects of cannabis at the time of the crash adversely affected her judgment of the danger of entering the intersection in front of the approaching combination vehicle.”

3. (countable, uncountable)A disability or handicap.

   “visual impairment”

4. (countable, uncountable)An inefficient part or factor.
5. (countable, uncountable)A downward revaluation, a write-down.