- pestilent
- adj1. pestilential, pestiferous, infective, infectious, contaminative; infested, pest-ridden, diseased, disease-ridden, infected, septic, leprous; contagious, communicable, catching; epidemic, pandemic, endemic, epizootic.2. pernicious, dangerous, hazardous, deleterious, detrimental, destructive, ruinous; deadly, lethal, fatal, mortal, mortiferous, Archaic. lethiferous; harmful, injurious, nocuous, hurtful, nocent, baleful, noisome; noxious, malicious, malign, malignant, menacing; venomous, poisonous, virulent, toxic, morbific, morbid, Rare. morbiferous; fell, baneful, mephitic, viperous, Rare. virose, (in prescriptions) venenosus, Archaic. venenose; insalubrious, unhealthful, unhygienic, insanitary, unhealthy.3. evil, wicked, iniquitous, black-hearted, sinister, vicious; base, vile, foul, mean, low, bad, odious; dire, dark, black, dreadful, grim; damnable, damnatory, accursed, cursed; maleficent, malefic, malevolent, evil-minded, demonic, diabolic, devilish; criminal, felonious, wrong, reprehensible; immoral, corrupting, polluting, debauched, debased, depraved.4. mischievous, impish, elfish, prankish; vexatious, troublesome, naughty, annoying, irritating.
A Note on the Style of the synonym finder. 2014.