deadening

As a verb deadening

is .

As an adjective deathly is

appearing as though dead, or on the verge of death.

As an adverb deathly is

in a way that resembles death.

As a verb deadening

is .

As an adjective deadly is

(lb) subject to death; mortal.

As an adverb deadly is

(obsolete) fatally, mortally.

As a noun terms

is .

As a verb deadening is

.

As verbs the difference between deadening and deafening

is that deadening is present participle of deaden while deafening is present participle of deafen.

As an adjective deafening is

loud enough to cause temporary or permanent hearing loss.

As a noun deafening is

pugging.