damage, harm, impairment (noun)

the occurrence of a change for the worse

deterioration, impairment (noun)

a symptom of reduced quality or strength

disability, disablement, handicap, impairment (noun)

the condition of being unable to perform as a consequence of physical or mental unfitness

"reading disability"; "hearing impairment"

impairment (noun)

damage that results in a reduction of strength or quality

stultification, constipation, impairment, deadening (noun)

the act of making something futile and useless (as by routine)

impairment (Noun)

The result of being impaired; a deterioration or weakening; a disability or handicap; an inefficient part or factor.

impairment (Noun)

A downward revaluation, a write-down.