Learn how to say Impairment correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word impair:
weaken or damage (something, especially a faculty or function):
a noisy job could permanently impair their hearing
Middle English enpeire, from Old French empeirier, based on late Latin pejorare (from Latin pejor ‘worse’). The current spelling is due to association with words derived from Latin beginning with im-