[in-fest] /ɪnˈfɛst/
verb (used with object)
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.
1375–1425; late Middle English < Latin infestāre to assail, molest, derivative of infestus hostile
Related forms
infester, noun
reinfest, verb (used with object)
uninfested, adjective
Can be confused
infect, infest, invest.
British Dictionary definitions for infesting
infest (ɪnˈfɛst)
1.  to inhabit or overrun in dangerously or unpleasantly large numbers
2.  (of parasites such as lice) to invade and live on or in (a host)
[C15: from Latin infestāre to molest, from infestus hostile]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin and History for infesting
late 15c., "to attack, assail, hurt, distress, annoy," from M.Fr. infester, from L. infestare "to attack, disturb, trouble," from infestus "hostile, dangerous," originally "inexorable, not able to be handled," from in- "not" + -festus "(able to be) seized." Sense of "swarm over in large numbers" first recorded c.1600.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
infesting in Medicine

infest in·fest (ĭn-fěst')
v. in·fest·ed, in·fest·ing, in·fests

  1. To live as a parasite in or on tissues or organs or on the skin and its appendages.

  2. To inhabit or overrun in numbers large enough to be harmful, threatening, or obnoxious.

in'fes·ta'tion n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Difficulty index for infesting

Some English speakers likely know this word

Tile value for infesting

Scrabble Words With Friends