Thesaurus

deadly

adjective

Synonyms and Antonyms of deadly

  1. 1 likely to cause or capable of causing death the doctors were alarmed about the outbreak of the deadly new virus Synonyms of deadly baleful, deathly, fatal, fell, killer, lethal, mortal, murderous, pestilent, terminal, vital Words Related to deadly baneful, deleterious, destructive, harmful, injurious, noxious, pernicious, truculent; infectious, infective, pestilential, poisonous, sublethal, toxic, virulent; dangerous, grave, grievous, hazardous, jeopardizing, menacing, parlous, perilous, risky, serious, threatening, ugly, unhealthy, unsound; bloody, internecine, sanguinary, sanguine Near Antonyms of deadly beneficial, restorative, salubrious, salutary; alleviative, corrective, curative, remedial, tonic; advantageous, beneficial, useful; nonpoisonous, nontoxic, safe Antonyms of deadly healthful, healthy, nonfatal, nonlethal, wholesome

  2. 2 having no exceptions or restrictions the deadly tedium of waiting for the fog to lift Synonyms of deadly all-out, arrant, blank, blooming [chiefly British], bodacious [Southern & Midland], categorical (also categoric), clean, complete, consummate, cotton-picking, crashing, damn, damned, dead, absolute, definite, downright, dreadful, fair, flat, flat-out, out-and-out, outright, perfect, plumb, profound, pure, rank, regular, sheer, simple, stark, stone, straight-out, thorough, thoroughgoing, total, unadulterated, unalloyed, unconditional, unmitigated, unqualified, utter, veryWords Related to deadly authentic, classic, genuine, real, veritable; constant, endless, eternal, perpetual, undying, unremitting; extreme, unrestricted; confirmed, habitual, hopeless, inveterate; extraordinary, frightful, horrible, huge, main, superlative, supreme, surpassing, terrible, terrificNear Antonyms of deadly doubtful, dubious, equivocal, qualified, questionable, restricted, uncertain

  3. 3 of, relating to, or suggestive of death a deadly pallor spread across her face as the tragic news gradually sank in Synonyms of deadly dead, deathly, mortal, mortuaryWords Related to deadly cadaverous; ghostlike, ghostly, phantom, spectral; inactive, inert, inoperative, lifeless, quiescent, still; macabre; baleful, fatal, fateful, fell, killer, lethal, murderous, pestilentNear Antonyms of deadly active, alive, animate, breathing, live, living; animated, bouncing, brisk, energetic, frisky, gay, jaunty, jazzy, lively, peppy, perky, pert, racy, snappy, spanking, sparky, spirited, sprightful, sprightly, springy, vigorous, vital, vivacious, zippy; able-bodied, chipper, fit, hale, healthy, hearty, robust, sound, well, whole, wholesome

Synonym Discussion of deadly

deadly, mortal, fatal, lethal mean causing or capable of causing death. deadly applies to an established or very likely cause of death.
    • a deadly disease
mortal implies that death has occurred or is inevitable.
    • a mortal wound
fatal stresses the inevitability of what has in fact resulted in death or destruction.
    • fatal consequences
lethal applies to something that is bound to cause death or exists for the destruction of life.
    • lethal gas

deadly

adverb

Synonyms and Antonyms of deadly

  1. to a great degree I'm deadly serious about making an offer on the house Synonyms of deadly achingly, almighty, archly, awful, awfully, badly, beastly, blisteringly, bone, colossally, corking, cracking, damn, damned, dang, very, desperately, eminently, enormously, especially, ever, exceedingly (also exceeding), extra, extremely, fabulously, fantastically, far, fiercely, filthy, frightfully, full, greatly, heavily, highly, hugely, immensely, incredibly, intensely, jolly, majorly, mightily, mighty, monstrous [chiefly dialect], mortally, most, much, particularly, passing, rattling, real, really, right, roaring, roaringly, seriously, severely, so, sore, sorely, spanking, specially, stinking, such, super, supremely, surpassingly, terribly, that, thumping, too, unco, uncommonly, vastly, vitally, way, whacking, wicked, wildlyWords Related to deadly absolutely, altogether, completely, downright, entirely, flat-out, fully, positively, purely, radically, thoroughly, totally, utterly, wholly; deeply, profoundly; exceptionally, notably, remarkably; considerably, extensively, significantly, substantially; appreciably, discernibly, markedly, noticeably, obviously, palpably, plainly, visibly; abundantly, plentifully; astronomically, grandly, monstrously, monumentally; excessively, obscenely, overmuch; amazingly, astonishingly, staggeringlyNear Antonyms of deadly meagerly, scantily; barely, hardly, just, marginally, minimally, scarcelyAntonyms of deadly little, negligibly, nominally, slightly, somewhat



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