Pestiferous
131noxious — I adjective adverse, bad, baleful, baneful, brutal, causing danger, contaminated, corrupting, damaging, dangerous, deleterious, destructive, detrimental, disadvantageous, fatal, fraught with danger, harmful, hazardous, hurtful, impairing,… …
132pest — noun a) A plague, pestilence, epidemic Stop being such a pest and leave that girl alone! b) An annoying, harmful, often destructive creature …