A criminal charge for driving a vehicle while impaired.
"The police officer arrested him for impaired after he failed the field sobriety test and blew over the legal limit at the roadside checkpoint."
In plain English: An impaired person is someone whose ability to think, move, or act normally has been weakened by something like drugs or alcohol.
"The impaired caused several drivers to crash into each other on the highway last night."
Usage: The noun form of impairment refers to the legal offense of operating a motor vehicle under the influence, whereas the adjective describes any reduction in physical or mental function. Use this term specifically when discussing traffic laws and charges related to drunk or drugged driving.
simple past tense and past participle of impair
"The accident left his vision impaired, making it difficult to see clearly in bright light."
In plain English: To impair something is to make it less effective, strong, or able to work properly.
"The storm impaired our ability to see the road ahead."
Rendered less effective.
"The old car was impaired by the severe rain, causing it to skid on the wet road."