pest
noun /pest/
  /pest/
 - an insect or animal that destroys plants, food, etc.
- insect/plant/garden pests
 - a pest control officer
 - These birds provide a useful function in controlling insect pests.
 
Oxford Collocations Dictionaryadjective- common
 - major
 - serious
 - …
 
- control
 - repel
 - eradicate
 - …
 
- control
 - controller
 - management
 - …
 
 - (informal) an annoying person or thing
- That child is being a real pest.
 - Police are looking for a sex pest who is frightening late-night travellers.
 
 
Word Originlate 15th cent. (denoting the bubonic plague): from French peste or Latin pestis ‘plague’.