impairment

英[ɪm'peəm(ə)nt] 美[ɪm'pɛrmənt]

1. the occurrence of a change for the worse

2. a symptom of reduced quality or strength

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

"reading disability"

"hearing impairment"

4. damage that results in a reduction of strength or quality

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