adjective. Of, resembling, or characteristic of death.

adjective. Causing death; fatal.

adverb. In the manner of death.

adverb. Extremely; very.

So as to resemble a dead person, or death.

Like or characteristic of death; partaking of the nature or appearance of death: as, a deathly swoon; deathly pallor.

Threatening death; fatal; mortal; deadly.

Synonyms See deadly.

adjective. Deadly; fatal; mortal; destructive.

adverb. Deadly.

adjective. Appearing as though dead, or on the verge of death.

adjective. Fatal, causing death.

adjective. Extreme.

adverb. With reference to death.

adverb. Extremely, dreadfully.

adverb. to a degree resembling death

adjective. causing or capable of causing death

adjective. having the physical appearance of death

"Any sense of trepidation surrounding Haneke’s vision of a post-apocalyptic existence is heightened by his movie’s title sequence, which unfolds in deathly silence, white words on a black screen, and lasts for what seems like an eternity."

dead  fatal  

ashy  clammy  deathlike  expressionless  ghastly  

a la mort  abominably  agonizingly  appalling  awfully