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pestilent

 - 10 of 14 thesaurus results
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
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