Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun pest

4 senses of pest

Sense 1
plague, pestilence, pest, pestis -- (a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal)
       => epidemic disease -- (any infectious disease that develops and spreads rapidly to many people)

Sense 2
plague, pestilence, pest -- (any epidemic disease with a high death rate)
       => epidemic disease -- (any infectious disease that develops and spreads rapidly to many people)

Sense 3
pest, blighter, cuss, pesterer, gadfly -- (a persistently annoying person)
       => tormentor, tormenter, persecutor -- (someone who torments)

Sense 4
pest -- (any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.; "he sprayed the garden to get rid of pests"; "many pests have developed resistance to the common pesticides")
       => animal, animate being, beast, brute, creature, fauna -- (a living organism characterized by voluntary movement)