- to live in or overrun to an unwanted degree or in a troublesome manner, especially as predatory animals or vermin do: Sharks infested the coastline.
- to be numerous in, as anything undesirable or troublesome: the cares that infest the day.
- Archaic. to harass.
Origin of infest
Examples from the Web for infested
The walls are checkered by crumbling yellow paint and infested with rodents.Egypt, As Protests Rage, School Begins
September 15, 2012
Every once in a while, her friends call, like the one who suspected she was staying in an infested hotel.Vigilante Bedbug Exterminators
August 27, 2010
They were in fact two of the greatest banditti that ever infested the country.A Sketch of the Life of Brig. Gen. Francis Marion
William Dobein James
Such were three of the pirate buccaneers who infested the Spanish Main.Howard Pyle's Book of Pirates
Coming early in the spring, they are not likely to be infested with worms.The Mushroom, Edible and Otherwise
M. E. Hard
"The road is infested with banditti," growled out the padre.The Daltons, Volume II (of II)
Charles James Lever
The country here is infested by guerillas, whom all our efforts cannot eradicate.Under Wellington's Command
G. A. Henty
- to inhabit or overrun in dangerously or unpleasantly large numbers
- (of parasites such as lice) to invade and live on or in (a host)
Word Origin and History for infested
late 15c., "to attack, assail, hurt, distress, annoy," from Middle French infester, from Latin infestare "to attack, disturb, trouble," from infestus "hostile, dangerous," originally "inexorable, not able to be handled," from in- "not, opposite of" (see in- (1)) + -festus "(able to be) seized." Sense of "swarm over in large numbers" first recorded c.1600. Related: Infested; infesting.
- To live as a parasite in or on tissues or organs or on the skin and its appendages.
- To inhabit or overrun in numbers large enough to be harmful, threatening, or obnoxious.