Indistinct is a related term of deadened.
As an adjective indistinct
is (of an image etc) not clearly defined or not having a sharp outline; faint or dim.
As a verb deadened is
(deaden).
indistinct
English
Adjective
(
en adjective)
(of an image etc) not clearly defined or not having a sharp outline; faint or dim
(of a thought, idea etc) hazy or vague
(of speech) difficult to understand
Antonyms
* distinct
deadened
English
Verb
(head)
(deaden)
deaden
English
Verb
(
en verb)
To render less lively; to diminish; to muffle.
To become less lively; to diminish (by itself).
To make soundproof.