impairment

(n) the occurrence of a change for the worse damage, harm,
(n) a symptom of reduced quality or strength deterioration,
(n) the condition of being unable to perform as a consequence of physical or mental unfitness
- reading disability
- hearing impairment
disability, disablement, handicap,
(n) damage that results in a reduction of strength or quality
(n) the act of making something futile and useless (as by routine) deadening, constipation, stultification,

damage harm deterioration disability disablement handicap deadening constipation stultification