[n] (informal) an annoyance; "those children are a damn plague"
[n] any large scale calamity (especially when thought to be sent by God)
[n] a swarm of insects that attack plants; "a plague of grasshoppers"
[n] any epidemic disease with a high death rate
[n] a serious (sometimes fatal) infection transmitted by the bite of an infected rat flea (especially bubonic plague)
[v] annoy continually or chronically; "He is known to harry his staff when he is overworked"
[v] cause to suffer a blight; "Too much rain may blight the garden with mold"
beset, blight, chevvy, chevy, chivvy, chivy, harass, harry, hassle, infestation, molest, pestilence, provoke