FluentPlex

impair

/ɪmˈpɛɹ/ verb B1
  1. To weaken; to affect negatively; to have a diminishing effect on. (transitive)

He/she/it impairs · Past impaired · Past participle impaired · -ing form impairing

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Verb forms

Base form
impair
He/she/it
impairs
Past
impaired
Past participle
impaired
-ing form
impairing

From the library

Their evidence, corroborated by that of several friends, tends to show that Sir Charles’s health has for some time been impaired, and points especially to some affection of the heart, manifesting itself in changes of colour, breathlessness, and acute attacks of nervous depression.
The Hound of the Baskervilles, p. 17 · C1
“Oh, gentlemen, you see it is all useless, and that my father’s mind is really impaired,” said Villefort.
The Count of Monte Cristo, p. 626 · C1

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.