Synonyms of pestilent

1 Syllable
trying
2 Syllables
tainting, deadliest, fatal, deadlier, ruinous, harmful, noxious, evil, lethal, vicious, miasmic, deadly, mortal
3 Syllables
pernicious, death-dealing, corrupting, diseased, injurious, necrotic, infectious, contagious, baneful, miasmatic
4 Syllables
pestilential, pestiferous, detrimental, deleterious, troublesome, destructive, transmittable, infective
5 Syllables
contaminating