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View synonyms for infect

infect

[ in-fekt ]

verb (used with object)

  1. to affect or contaminate (a person, organ, wound, etc.) with disease-producing germs.
  2. to affect with disease.
  3. to taint or contaminate with something that affects quality, character, or condition unfavorably:

    to infect the air with poison gas.

  4. to corrupt or affect morally:

    The news of the gold strike infected him with greed.

  5. to imbue with some pernicious belief, opinion, etc.

    Synonyms: corrupt, damage

  6. to affect with a computer virus.

    Synonyms: arouse, stir, touch

  7. to affect so as to influence feeling or action:

    His courage infected the others.

  8. Law. to taint with illegality, or expose to penalty, forfeiture, etc.


verb (used without object)

  1. to become infected.

adjective

  1. Archaic. infected.

infect

/ ɪnˈfɛkt /

verb

  1. to cause infection in; contaminate (an organism, wound, etc) with pathogenic microorganisms
  2. also intr to affect or become affected with a communicable disease
  3. to taint, pollute, or contaminate
  4. to affect, esp adversely, as if by contagion
  5. computing to affect with a computer virus
  6. international law to taint with crime or illegality; expose to penalty or subject to forfeiture
“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

adjective

  1. archaic.
    contaminated or polluted with or as if with a disease; infected
“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
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Derived Forms

  • inˈfector, noun
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Other Words From

  • in·fectant adjective
  • in·fected·ness noun
  • in·fector in·fecter noun
  • nonin·fected adjective
  • nonin·fecting adjective
  • prein·fect verb (used with object)
  • rein·fect verb (used with object)
  • unin·fected adjective
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Word History and Origins

Origin of infect1

1350–1400; Middle English infecten < Latin infectus (past participle of inficere to immerse in dye, discolor, taint, poison), equivalent to in- in- 2 + -fec-, combining form of facere to do 1, make ( fact ) + -tus past participle suffix
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Word History and Origins

Origin of infect1

C14: from Latin inficere to dip into, stain, from facere to make
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Example Sentences

The Yakimovich group "Machine Learning for Infection and Disease" aims to understand the complex network of molecular interactions that is active after the body has been infected with a pathogen.

The bird flu crisis, driven by the H5N1 virus, began several years ago, but ramped up considerably in April when dairy cows started becoming infected.

From Salon

And a vaccine targeting the post-fusion version of the protein wouldn't teach the immune system to attack the virus before it has a chance to infect the body.

Numerous organizations have reported that quarantine centers have not received food, causing infected people to leave and return to their families, increasing the spread risk.

From Salon

They can, however, also infect other organs and cause neurological disorders.

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Related Words

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More About Infect

What does infect mean?

Infect is a verb that means to taint someone or something with disease-causing germs or to spread a disease to another living thing, as in The doorknob was infected with disease-causing bacteria. 

Infect can also mean to taint something in a way that negatively affects quality, as in The water was infected with toxic chemicals. Computers and other devices that connect to the internet can also become infected. Instead of a virus of living organisms infecting your computer, though, bits of  code attack your computer system to do harm.

Infect is also used figuratively to mean to corrupt something in various ways. It can mean something was corrupted morally, as in The constant flattery caused him to be infected with hubris. 

Infect can also be used to mean someone has been corrupted by harmful thoughts or beliefs, as in He allowed hatred to infect his mind. 

The adjective infectious is used to mean something is capable of infecting things, as in Doctors worked to stop the spread of the infectious disease. 

Infect can be confused with infest, which means to overrun a place or live there in an unwanted manner.

Example: Tia stayed home from school so she wouldn’t infect her classmates with the flu. 

Where does infect come from?

The first records of the word infect come from around 1350. It ultimately comes from the Latin inficere, meaning “to immerse in dye” or “to taint.” Infect, according to any of its meanings, refers to tainting something or someone.

You will hear the word infect often used during outbreaks of disease or during flu season. Microorganisms that cause disease, such as bacteria and viruses, usually reproduce very quickly and are able to spread from one living thing to another. Often, this spread happens when bodily fluids make contact with surfaces and infect them with germs. A healthy person then touches this surface and the germs enter their body and infect them as well. For this reason, medical experts advise practices such as social distancing, cleanliness, and frequent handwashing to try and prevent being infected with a disease.

Did you know … ?

What are some other forms related to infect?

  • infectant (adjective)
  • infectedness (noun)
  • infector (noun)
  • noninfected (adjective)

What are some synonyms for infect?

What are some words that share a root or word element with infect

What are some words that often get used in discussing infect?

What are some words infect may be commonly confused with?

How is infect used in real life?

Infect is a common word that most often refers to the spread of disease or disease-causing germs.

Try using infect!

Is infect used correctly in the following sentence?

I tried to stay in my room when I had the flu so that I wouldn’t infect my family with the flu virus.

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