impaired

[ im-paird ]

/ ɪmˈpɛərd /

weakened, diminished, or damaged: impaired hearing; to rebuild an impaired bridge.

functioning poorly or inadequately: Consumption of alcohol results in an impaired driver.

deficient or incompetent (usually preceded by an adverb or noun): morally impaired; sports-impaired.

Origin of impaired

impair + -ed²

un·im·paired, adjective

He proceeded to demonstrate that his sense of humor was unimpaired.

Kofi Awoonor, the Ghanaian Poet Killed in Westgate Mall Attack |Michael Daly |September 24, 2013 |DAILY BEAST
Pleasure appears as the accompaniment of unimpaired and unimpeded function everywhere as far as our knowledge extends.

A Review of the Systems of Ethics Founded on the Theory of Evolution |C. M. Williams
As the days passed, the king grew weaker and weaker, but his faculties were never clouded, and his cheerfulness was unimpaired.

Lords of the World |Alfred John Church
They all grew lazy out East here (Sterne was very conscious of his own unimpaired activity); they got slack all over.

End of the Tether |Joseph Conrad

Still, British landlords did what they liked with their own, and self-government is unimpaired.

Mr. Punch's History of Modern England, Vol. I (of 4).--1841-1857 |Charles L. Graves
Unimpaired life—life with the power and will to go on living—is the greatest boon and best remedy of any that can be offered.

The Lonely Way--Intermezzo--Countess Mizzie |Arthur Schnitzler

unimpaired

/ (ˌʌnɪmˈpɛəd) /

not reduced or weakened in strength, quality, etc