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
That’s where cognition becomes impaired, muscle contraction becomes impaired, and metabolism actually slows. Patrick Iversen, New York Times, 6 Sep. 2026 Between Memorial Day and Labor Day is considered the deadliest time of year on the road, because of an increase in impaired, distracted and reckless driving. Tara Lynch, CBS News, 6 Sep. 2026 Overdosing on the drug can cause extreme drowsiness, confusion, impaired coordination, decreased reflexes, respiratory depression, coma and possible death. Natasha Holt, FOXNews.com, 5 Sep. 2026 The gradual accumulation of these substances in the body can disrupt normal physiological functions, ultimately leading to disease, impaired health, and, in severe cases, death. Encyclopedia Britannica, 3 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 11 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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