deaf
noun
people who have severe hearing impairments
“many of the deaf use sign language”
verb
make or render deaf
“a deafening noise”
Synonymsdeafen
adjective
lacking or deprived of the sense of hearing wholly or in part
Oppositeshearing(usually followed by `to') unwilling or refusing to pay heed
“deaf to her warnings”
Synonymsindifferent
Source: WordNet 3.1, Princeton University