impaired

When something is impaired, it's diminished or damaged. Someone who can't see very well has impaired sight.

When something is broken and isn't working at 100%, it's impaired. People with impaired hearing are deaf, and people who are physically impaired have to use crutches or wheelchairs. Everyone who wears glasses or contact lenses has impaired vision. If you break your ankle, your ability to walk is impaired. And if something caused you to make a bad decision, you could say your judgment was impaired.

Definitions of impaired
  1. adjective
    mentally or physically unfit
    synonyms: afflicted
    unfit
    not in good physical or mental condition; out of condition
  2. adjective
    diminished in strength, quality, or utility
    impaired eyesight”
    Synonyms:
    damaged
    harmed or injured or spoiled
    anosmic
    having impaired sense of smell
    broken
    weakened and infirm
    dickey, dicky
    (British informal) faulty
    diminished, lessened, vitiated, weakened
    impaired by diminution
    dysfunctional
    impaired in function; especially of a bodily system or organ
    dyslectic, dyslexic
    having impaired ability to comprehend written words usually associated with a neurologic disorder
    injured
    harmed
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    Antonyms:
    unimpaired
    not damaged or diminished in any respect
    undamaged
    not harmed or spoiled; sound
    uninjured
    not injured physically or mentally
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