definition of
deathly

[1] #1 deathly s. [deathlike] having the physical appearance of death; "a deathly pallor". wn

[2] #2 deathly r. to a degree resembling death; "he was deathly pale". wn

[3] #3 deathly s. [deadly, mortal] causing or capable of causing death; "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness". wn