DEADENED
deadened
(adjective) made or become less intense; “the deadened pangs of hunger”
dead, deadened
(adjective) devoid of physical sensation; numb; “his gums were dead from the novocain”; “she felt no discomfort as the dentist drilled her deadened tooth”; “a public desensitized by continuous television coverage of atrocities”
Source: WordNet® 3.1
Verb
deadened
simple past tense and past participle of deaden
Source: Wiktionary
DEADEN
Dead"en, v. t. [imp. & p. p. Deadened; p. pr. & vb. n. Deadening.]
Etym: [From Dead; cf. AS. d to kill, put to death. See Dead, a.]
1. To make as dead; to impair in vigor, force, activity, or
sensation; to lessen the force or acuteness of; to blunt; as, to
deaden the natural powers or feelings; to deaden a sound.
As harper lays his open palm Upon his harp, to deaden its vibrations.
Longfellow.
2. To lessen the velocity or momentum of; to retard; as, to deaden a
ship's headway.
3. To make vapid or spiritless; as, to deaden wine.
4. To deprive of gloss or brilliancy; to obscure; as, to deaden
gilding by a coat of size.
Source: Webster’s Unabridged Dictionary 1913 Edition