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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | deadly |
| Synonyms: | baleful, dangerous, deathly, destructive, devastating, fatal, harmful, hurtful, malignant, mortal, mortiferous, mortuary, murderous, necrotic, noxious, pernicious, pestilent, pestilential, poisonous, virulent |
| Notes: | use fatal for something which has caused someone's death; use lethal for something which is capable of killing someone |
| Antonyms: | beneficial, harmless, helpful, life-giving |
| Main Entry: | deathly |
| Part of Speech: | adjective |
| Definition: | fatal |
| Synonyms: | deadly, extreme, intense, lethal, mortal, mortiferous, noxious, pestilent, pestilential, terrible |
| Notes: | deadly means causing or capable of causing death while deathly means having the physical appearance of death |
| Antonyms: | benign, harmless, healthful, healthy, life-giving, strengthening |
| Main Entry: | destructive |
| Part of Speech: | adjective |
| Definition: | injurious, devastating |
| Synonyms: | annihilative, baleful, baneful, calamitous, cancerous, cataclysmic, catastrophic, consumptive, cutthroat, damaging, deadly, deleterious, detrimental, dire, disastrous, eradicative, evil, extirpative, fatal, fell, harmful, hurtful, internecine, lethal, lethiferous, mortal, noisome, noxious, pernicious, pestiferous, pestilential, ruinous, slaughterous, suicidal, toxic, venomous, wrackful, wreckful |
| Antonyms: | aiding, assisting, building, creative, helpful, productive |
| Main Entry: | fateful |
| Part of Speech: | adjective |
| Definition: | deadly |
| Synonyms: | calamitous, cataclysmic, catastrophic, destructive, disastrous, fatal, lethal, mortal, ominous, ruinous |
| Antonyms: | healthful, healthy, life-giving |
| Main Entry: | homicidal |
| Part of Speech: | adjective |
| Definition: | murderous |
| Synonyms: | bloodthirsty, deadly, lethal, maniacal, slaughterous, violent |
| Main Entry: | malignant |
| Part of Speech: | adjective |
| Definition: | diseased |
| Synonyms: | cancerous, deadly, destructive, fatal, internecine, lethal, mortal, pestilential, poisonous |
| Antonyms: | benign, harmless, uncancerous |
| Main Entry: | mortal |
| Part of Speech: | adjective |
| Definition: | deadly |
| Synonyms: | bitter, death-dealing, deathly, destructive, dire, ending, extreme, fatal, grave, great, grievous, grim, intense, killing, last, lethal, malignant, merciless, monstrous, mortiferous, murderous, noxious, pestilent, pestilential, poisonous, relentless, remorseless, ruthless, severe, terminal, terrible, unrelenting |
| Antonyms: | invigorating, lifegiving, permanent, refreshing |
| Main Entry: | murderous |
| Part of Speech: | adjective |
| Definition: | difficult |
| Synonyms: | arduous, brutal, criminal, cruel, dangerous, deadly, destroying, destructive, devastating, exhausting, fell, ferocious, harrowing, hellish, killing, lethal, ruinous, sapping, savage, strenuous, unpleasant |
| Antonyms: | easy, facile, pleasant |
| Main Entry: | pernicious |
| Part of Speech: | adjective |
| Definition: | bad, hurtful |
| Synonyms: | baleful, damaging, dangerous, deadly, deleterious, destructive, detrimental, devastating, evil, fatal, harmful, iniquitous, injurious, killing, lethal, maleficent, malevolent, malicious, malign, malignant, miasmatic, miasmic, mortal, nefarious, noisome, noxious, offensive, pestiferous, pestilent, pestilential, poisonous, prejudicial, ruinous, sinister, toxic, venomous, virulent, wicked |
| Antonyms: | helpful, innocuous, kind, lovable, loving |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
