deafest
deaf-est
adjective
Having the most severe inability to hear, or most unwilling to listen.
"She was the deafest to his pleas."
Thesaurus
Synonyms: tone-deaf, deaf-and-dumb, deaf, deafened, stone-deaf, deaf-mute, unhearing, deaf as a post, hearing-impaired, hard-of-hearing, profoundly deaf, deafen
Antonyms: hearing(a)