impairment

Noun

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

• damage that results in a reduction of strength or quality

• the condition of being unable to perform as a consequence of physical or mental unfitness
  • reading disability
    
  • hearing impairment
    

• a symptom of reduced quality or strength

• the occurrence of a change for the worse

Related words

• Synonyms: 
  stultification , constipation , deadening , disability , disablement , handicap , deterioration , damage , harm