IMPAIRED

afflicted, impaired

(adjective) mentally or physically unfit

impaired

(adjective) diminished in strength, quality, or utility; “impaired eyesight”

Source: WordNet® 3.1

Adjective

impaired

Rendered less effective.

inebriated, drunk.

Usage notes

• Nouns to which "impaired" is often applied: vision, hearing, mobility, healing, fertility, health, judgment, cognition, consciousness, memory, concentration, function, performance, ability, capacity, person, child, adult.

• Adverbs often applied to "impaired": visually, physically, mentally, emotionally, cognitively.

Synonyms

• (rendered less effective)

• (drunk): See drunk

Verb

impaired

simple past tense and past participle of impair

Noun

impaired (plural impaireds)

A criminal charge for driving a vehicle while impaired.

The cop gave me an impaired.

Source: Wiktionary

IMPAIR

Im*pair", v. t. [imp & p. p. Impaired; p. pr. & vb. n. Impairing.] [Written also empair.] Etym: [OE. empeiren, enpeiren, OF. empeirier, empirier, F. empirer, LL. impejorare; L. pref. im- in + pejorare to make worse, fr. pejor worse. Cf. Appair.]

Definition: To make worse; to diminish in quantity, value, excellence, or strength; to deteriorate; as, to impair health, character, the mind, value. Time sensibly all things impairs. Roscommon. In years he seemed, but not impaired by years. Pope.

Syn.

– To diminish; decrease; injure; weaken; enfeeble; debilitate; reduce; debase; deteriorate.

Im*pair", v. t.

Definition: To grow worse; to deteriorate. Milton.

Im"pair, a. Etym: [F. impair uneven, L. impar; im- not + par equal.]

Definition: Not fit or appropriate. [Obs.]

Im*pair", n.

Definition: Diminution; injury. [Obs.]

Source: Webster’s Unabridged Dictionary 1913 Edition