Synonyms of pestilential

2 Syllables
deadliest, fatal, deadlier, septic, wreckful, toxic, harmful, noxious, lethal, malign, miasmic, catching, poison, deadly, mortal
3 Syllables
pernicious, death-dealing, mephitic, injurious, necrotic, infectious, toxicant, venomous, poisonous, pestilent, contagious, baneful, noisome, miasmatic, unhealthy, malignant
4 Syllables
infestive, lethiferous, malodorous, epizootic, impartible, transmissible, pestiferous, troublesome, destructive, transmittable, infective, mephitical
5 Syllables
extirpative, insalutary, unwholesome, inoculable
6 Syllables
eradicative