Deathly has 6 different meanings across 2 categories:
Adjective · Adverb
having the physical appearance of death
"a deathly pallor"
causing or capable of causing death
"a fatal accident"
"a deadly enemy"
"mortal combat"
"a mortal illness"
Appearing as though dead, or on the verge of death.
to a degree resembling death
"he was deathly pale"
to an extreme degree
"extremely cold"
"extremely unpleasant"
"she is super smart"
"the night was deathly cold"
"as a child, I was deathly afraid of snakes"
In a way that resembles death.