pest

An annoying person or thing; a nuisance.

An organism, typically an insect, that sickens or annoys humans, hampers human activities, damages crops or food products, harms livestock, or causes damage to buildings.

A deadly epidemic disease; a pestilence.

Plague; pestilence; a deadly epidemic disease.

Any very noxious, mischievous, or destructive thing, or a mischievous, destructive, very annoying, or troublesome person.

Synonyms Infection.

Scourge, nuisance.

A fatal epidemic disease; a pestilence; specif., the plague.

Anything which resembles a pest; one who, or that which, is troublesome, noxious, mischievous, or destructive; a nuisance.

A plague, pestilence, epidemic