deaf

Short definition from Wiktionary

Adjective

1. 1
   Unable (or partially able) to hear.
2. 2
   Unwilling to listen or be persuaded; determinedly inattentive.
3. 3
   Of or relating to the community of deaf people.
4. 4
   Obscurely heard; stifled; deadened.
5. 5
   Decayed; tasteless; useless.
6. 6
   Of or relating to the culture surrounding deaf users of sign languages.

Noun

1. 1
   A deaf person.

Verb

1. 1
   To deafen.