impairment

(noun) the occurrence of a change for the worse. Synonyms: damage, harm.

(noun) a symptom of reduced quality or strength. Synonyms: deterioration.

(noun) the condition of being unable to perform as a consequence of physical or mental unfitness. Synonyms: disability, disablement, handicap. Examples: "Reading disability." "Hearing impairment."

(noun) damage that results in a reduction of strength or quality.

(noun) the act of making something futile and useless (as by routine). Synonyms: stultification, constipation, deadening.