| Main Entry: | pestilent/pestilential |
| Part of Speech: | adjective |
| Definition: | dangerous, |
Synonyms: |
contagious, contaminating, corrupting, deadly, deleterious, destructive, detrimental, diseased, evil, fatal, harmful baneful, infectious, injurious, lethal, mortal, noxious, pernicious, pestiferous, ruinous, tainting, troublesome, vicious |
Antonyms: |
clean, healthy, hygienic, safe, sanitary |
| Main Entry: | pestilent |
| Part of Speech: | adjective |
| Definition: | dangerous |
Synonyms: |
baneful, contagious, contaminating, corrupting, deadly, deleterious, destructive, detrimental, diseased, evil, fatal, harmful, infectious, injurious, lethal, mortal, noxious, pernicious, pestiferous, pestilential, ruinous, tainting, troublesome, vicious |
| Main Entry: | baneful |
| Part of Speech: | adjective |
| Definition: | ruinous, injurious |
Synonyms: |
baleful, calamitous, deadly, deleterious, destructive, disastrous, evil, fatal, harmful, hurtful, malefic, noxious, pernicious, pestilent, pestilential, poisonous, venomous, wicked |
| Notes: | something is baleful that intends or portends harm or injury; something is baneful that produces harm or injury - thus, a glance may be baleful, an herb or poison baneful |
Antonyms: |
advantageous, beneficial, beneficient, fortunate, helpful, lucky |
| Main Entry: | deadly |
| Part of Speech: | adjective |
| Definition: | causing end of life |
Synonyms: |
baleful, baneful, bloodthirsty, bloody, cannibalistic, carcinogenic, cruel, dangerous, death-dealing, deathly, deleterious, destroying, destructive, fatal, grim, harmful, homicidal, injurious, internecine, killing, lethal, malignant, mortal, mortiferous, murderous, noxious, pernicious, pestiferous, pestilent, pestilential, poisonous, ruthless, savage, slaying, suicidal, toxic, unrelenting, venomous, violent, virulent |
Antonyms: |
animating, energizing, harmless, healthful, healthy, invigorating, wholesome |
| Main Entry: | deathly |
| Part of Speech: | adjective |
| Definition: | fatal |
Synonyms: |
deadly, extreme, intense, lethal, mortal, mortiferous, noxious, pestilent, pestilential, terrible |
Antonyms: |
benign, harmless, healthful, healthy, life-giving, strengthening |
| Main Entry: | fatal |
| Part of Speech: | adjective |
| Definition: | deadly, lethal |
Synonyms: |
baleful, baneful, calamitous, cataclysmic, catastrophic, deathly, destructive, disastrous, fateful, final, ill-fated, ill-starred, incurable, inevitable, killing, malefic, malignant, mortal, mortiferous, noxious, pernicious, pestilent, pestilential, poisonous, ruinous, terminal, virulent |
Antonyms: |
healthful, life-giving, nourishing, vital, wholesome |
| Main Entry: | infectious |
| Part of Speech: | adjective |
| Definition: | catching, spreading |
Synonyms: |
communicable, contagious, contaminating, corrupting, defiling, diseased, epidemic, infective, mephitic, miasmic, noxious, pestilent, pestilential, poisoning, polluting, toxic, transferable, transmittable, virulent, vitiating |
Antonyms: |
antiseptic, germless, harmless, non-infectious, uncommunicable, uncontagious |
| Main Entry: | lethal |
| 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 |
Antonyms: |
beneficial, harmless, helpful, life-giving |
| 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: | noxious |
| Part of Speech: | adjective |
| Definition: | deadly, injurious |
Synonyms: |
baneful, corrupting, dangerous, deleterious, destructive, detrimental, fetid, foul, harmful, hurtful, insalubrious, insalutary, noisome, pernicious, pestiferous, pestilent, pestilential, poisonous, putrid, sickly, spoiled, stinking, toxic, unhealthful, unhealthy, unwholesome, venomous, virulent |
Antonyms: |
curing, good, healthy, helpful, hygienic, pure, sterile, wholesome |