verb (used with object)
to affect or contaminate (a person, organ, wound, etc.) with disease-producing germs.
to affect with disease.
to taint or contaminate with something that affects quality, character, or condition unfavorably: to infect the air with poison gas.
to corrupt or affect morally: The news of the gold strike infected him with greed.
to imbue with some pernicious belief, opinion, etc.
to affect with a computer virus.
to affect so as to influence feeling or action: His courage infected the others.
Law. to taint with illegality, or expose to penalty, forfeiture, etc.
verb (used without object)
to become infected.
Origin of infect
Synonyms for infect
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
verb (mainly tr)
to cause infection in; contaminate (an organism, wound, etc) with pathogenic microorganisms
(also intr) to affect or become affected with a communicable disease
to taint, pollute, or contaminate
to affect, esp adversely, as if by contagion
computing to affect with a computer virus
mainly international law to taint with crime or illegality; expose to penalty or subject to forfeiture
archaic contaminated or polluted with or as if with a disease; infected
Word Origin for infect
C14: from Latin inficere to dip into, stain, from facere to make
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
To contaminate with a pathogenic microorganism or agent.
To communicate a pathogen or disease to another organism.
To invade and produce infection in an organ or body part.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.