deaf 
/ˈdɛf/ adjective
/ˈdɛf/ adjective [more deaf; most deaf] 1 : not able to hear
▪ He has been deaf since birth. ▪ a deaf child ▪ She's completely/partially deaf in her right ear. ▪ a disease that caused her to go deaf [=become unable to hear] ▪ He's going a little deaf so you'll have to speak up. ▪ (informal) My grandmother's a sweet old lady, but she's as deaf as a post. [=she's very deaf] — see also tone-deaf 2 : not willing to listen to or consider something — usually + to ▪ They were deaf to all of our suggestions. ▪ deaf to reason
▪ He has been deaf since birth. ▪ a deaf child ▪ She's completely/partially deaf in her right ear. ▪ a disease that caused her to go deaf [=become unable to hear] ▪ He's going a little deaf so you'll have to speak up. ▪ (informal) My grandmother's a sweet old lady, but she's as deaf as a post. [=she's very deaf] — see also tone-deaf
fall on deaf ears — see 1ear
the deaf
: deaf people : people who are not able to hear
▪ She goes to a school for the deaf.
▪ She goes to a school for the deaf.
turn a deaf ear — see 1ear
— deaf·ness noun [noncount]
▪ The disease can cause blindness and deafness.
▪ The disease can cause blindness and deafness.
