DEAFENED
deafened
(adjective) caused to hear poorly or not at all
Source: WordNet® 3.1
Verb
deafened
simple past tense and past participle of deafen
Source: Wiktionary
DEAFEN
Deaf"en, v. t. [imp. & p. p. Deafened; p. pr. & vb. n. Deafening.]
Etym: [From Deaf.]
1. To make deaf; to deprive of the power of hearing; to render
incapable of perceiving sounds distinctly.
Deafened and stunned with their promiscuous cries. Addison.
2. (Arch.)
Definition: To render impervious to sound, as a partition or floor, by
filling the space within with mortar, by lining with paper, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition