Synonyms of impaired
: being in an imperfect or weakened state or condition: such as
a
: diminished in function or ability : lacking full functional or structural integrity
Brennan supports the use of corticosteroids in the treatment of inflammation, swelling, pain and impaired joint movement.—Stan Bergstein
Finding jobs can be difficult for visually impaired adults. About 70 percent of them are unemployed, the National Federation of the Blind says.—Eric Aasen
… some GERD patients have impaired gut motility, meaning that their stomachs empty too slowly.—Andrew Weil
b
: unable to function normally or safely (as when operating a motor vehicle) because of intoxication by alcohol or drugs
Drive Sober or Get Pulled Over is the safety advertisement that restaurants and bars will use to remind patrons of the dangers of driving impaired.—Mati Spencer

impaired

2 of 2

past tense and past participle of impair

Examples of impaired in a Sentence

Adjective driving while impaired is against the law special devices for sight-impaired visitors
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Allegedly impaired driver slams into city bus The dual tragedies on Tuesday evening unfolded in rapid succession. — Dalia Faheid, CNN Money, 20 Sep. 2026 Parkinson’s is often marked by tremors, slow or impaired movement, tenseness or rigidity and difficulty balancing, as well as speech changes and loss of automatic motor functions like blinking or smiling, according to Mayo Clinic. — Rachel Raposas, PEOPLE, 17 Sep. 2026 The Lighthouse for the Blind of Fort Worth has for decades been a haven for the blind and visually impaired, serving upwards of 3,000 clients annually in recent years. — Matthew Adams, Fort Worth Star-Telegram, 17 Sep. 2026 The unlawful act in this context usually means a driving infraction and not impaired driving. — David Taub, Sacbee.com, 16 Sep. 2026 See All Example Sentences for impaired

Word History

First Known Use

Adjective

1582, in the meaning defined above

Time Traveler
The first known use of impaired was in 1582

Browse Nearby Words

Cite this Entry

“Impaired.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/impaired. Accessed 26 Sep. 2026.

Kids Definition

impaired

adjective
: being in an imperfect or weakened state or condition: such as
a
: diminished in function or ability : lacking full functional or structural integrity
impaired heart action
b
: intoxicated by alcohol or drugs
driving while impaired

Medical Definition

impaired

adjective
: being in an imperfect or weakened state or condition: as
a
: diminished in function or ability : lacking full functional or structural integrity
Brennan supports the use of corticosteroids in the treatment of inflammation, swelling, pain and impaired movement.—Stan Bergstein
Finding jobs can be difficult for visually impaired adults.—Eric Aasen
b
: unable to function normally or safely (as when operating a motor vehicle) because of intoxication by alcohol or drugs
driving while impaired
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