Word Study
deathly
OXFORD DICTIONARY
deathly, adj. & adv.
--adj. (deathlier, deathliest) suggestive of death (deathly silence).
--adv. in a deathly way (deathly pale).
--adj. (deathlier, deathliest) suggestive of death (deathly silence).
--adv. in a deathly way (deathly pale).
THESAURUS
deathly
a la mort, abominably, agonizingly, appalling, awfully, baldly, balefully, baneful, bitterly, blatantly, blue, brashly, brutal, cadaverous, confoundedly, corpselike, cruelly, damnably, dead, deadened, deadly, death-bringing, deathful, deathlike, deathly pale, destructive, deucedly, distressingly, dolorously, dreadful, dreadfully, eerie, egregiously, excessively, excruciatingly, exorbitantly, extravagantly, fatal, feral, flagrantly, frightfully, ghastly, ghostlike, ghostly, grievously, grisly, gruesome, haggard, hellishly, horrible, horribly, improperly, inexcusably, infernally, inordinately, internecine, intolerably, killing, lamentably, lethal, livid, lurid, macabre, malign, malignant, miserably, mortal, mortuary, nakedly, openly, painfully, pale, pernicious, pestilent, pestilential, piteously, sadly, savage, shatteringly, shockingly, something awful, something fierce, sorely, staggeringly, terribly, to the death, torturously, unashamedly, unbearably, uncanny, unconscionably, unduly, unearthly, unpardonably, virulent, wan, wasted, weird, woefullyFor further exploring for "deathly" in Webster Dictionary Online