causing death; deadly; fatal.

like death

a deathly silence.

of, pertaining to, or indicating death; morbid

a deathly odor from the sepulcher.

in the manner of death.

very; utterly

deathly afraid.

adjective

animated , beginning , blooming , blossoming , lively , benign , harmless , healthful , healthy , life-giving , strengthening

adjective

appalling , cadaverous , corpselike , deathlike , defunctive , dreadful , gaunt , ghastly , grim , gruesome , haggard , horrible , macabre , pale , pallid , wan , wastednotes:deadly means causing or capable of causing death while deathly means having the physical appearance of death , deadly , extreme , intense , lethal , mortal , mortiferous , noxious , pestilent , pestilential , terriblenotes:deadly means causing or capable of causing death while deathly means having the physical appearance of death , ghostlike , ghostly , spectral , fatal , vital , extremely , grisly , terrible