infestation
word
Definition
A large number of unwanted insects, animals, or organisms that enter and spread in a place, often causing harm or problems.
Usage & Nuances
Mostly used in scientific, medical, or pest-control contexts. Common with 'infestation of' + pest, e.g., 'infestation of rats.' Not used for mild cases; implies a serious or troublesome level. Do not confuse it with 'infection' (disease-causing germs).
Example Sentences
The house has an infestation of ants.
basic
Farmers worry about infestation by crop pests.
basic
A bed bug infestation can be very hard to control.
basic
The school had to close for a week because of a severe infestation of lice.
natural
We called pest control as soon as we noticed an infestation in the kitchen.
natural
Roach infestations are common in big cities, especially in old buildings.
natural