deafer
deaf-er
adjective
Having a greater degree of hearing loss or inability to hear than before or another.
"He's deafer in his right ear now."
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)