in·​vade | \ in-ˈvād How to pronounce invade (audio) \
invaded; invading

Definition of invade

transitive verb

1 : to enter for conquest or plunder
2 : to encroach upon : infringe
3a : to spread over or into as if invading : permeate doubts invade his mind
b : to affect injuriously and progressively gangrene invades healthy tissue

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Other Words from invade

invader noun

Choose the Right Synonym for invade

trespass, encroach, infringe, invade mean to make inroads upon the property, territory, or rights of another. trespass implies an unwarranted or unlawful intrusion. hunters trespassing on farmland encroach suggests gradual or stealthy entrance upon another's territory or usurpation of another's rights or possessions. the encroaching settlers displacing the native peoples infringe implies an encroachment clearly violating a right or prerogative. infringing a copyright invade implies a hostile and injurious entry into the territory or sphere of another. accused of invading their privacy

Examples of invade in a Sentence

The troops invaded at dawn. When tourists invade, the town is a very different place. The cancer eventually invaded the brain. Weeds had invaded the garden. Bacteria invaded and caused an infection.
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Recent Examples on the Web The cornerstone of this process is antibody testing, which looks for proteins made by the body’s immune system to combat invading pathogens. National Geographic, "THE BEST OF NATIONAL GEOGRAPHIC DELIVERED TO YOUR INBOX," 6 May 2020 There are high hopes for these antibody tests, which detect proteins that form in blood as part of the body’s immune response to an invading virus. Kaiser Health News, oregonlive, "Can you trust results of new coronavirus antibody tests?," 28 Apr. 2020 The stone structure had fallen into disrepair over the centuries, so the team removed an invading rowan tree and cleaned up its collapsed walls. Theresa Machemer, Smithsonian Magazine, "Why Scottish Archaeologists Are Building a Replica of an Iron Age Stone Tower," 28 Apr. 2020 This equilibrium was shattered by the invading Europeans, causing a series of ecological crises that included famines and epidemics of rinderpest, sleeping sickness, jiggers, and others. Carey Baraka, Quartz Africa, "I am alive because my Kenyan great-grandfather quarantined 100 years ago and here we go again," 26 Apr. 2020 Their artifacts represented powerful imagery laced with anxieties and fear of the pandemic invading homes. USA Today, "A professor gives a challenging assignment; his students' responses move him to tears," 24 Apr. 2020 Acids and different enzymes inside the cell can break down the invading object and destroy it. Amanda Morris, azcentral, "Why does coronavirus make some sick and not others? The science behind immune reactions," 13 Apr. 2020 Washington pressed invading governments to withdraw their forces, successfully. ... WSJ, "What Would Ike Do About Current Oil Price Collapse?," 12 Apr. 2020 Immune system’s defense workers The immune systems of COVID-19 survivors figured out how to combat and defeat the invading SARS-CoV-2 virus. Ann Sheehy, The Conversation, "Antibodies in the blood of COVID-19 survivors know how to beat coronavirus – and researchers are already testing new treatments that harness them," 1 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'invade.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of invade

15th century, in the meaning defined at sense 1

History and Etymology for invade

borrowed from Latin invādere "to enter with hostile intent, assault, attack," from in- in- entry 2 + vādere "to advance, go (quickly or purposefully)" — more at wade entry 1

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Time Traveler for invade

Time Traveler

The first known use of invade was in the 15th century

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Statistics for invade

Last Updated

29 May 2020

Cite this Entry

“Invade.” Dictionary, Merriam-Webster, Accessed 5 Jun. 2020.

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More Definitions for invade


How to pronounce invade (audio)

English Language Learners Definition of invade

: to enter (a place, such as a foreign country) in order to take control by military force
: to enter (a place) in large numbers
: to enter or be in (a place where you are not wanted)


in·​vade | \ in-ˈvād How to pronounce invade (audio) \
invaded; invading

Kids Definition of invade

1 : to enter by force to conquer or plunder
2 : to show lack of respect for She invaded their privacy.

Other Words from invade

invader noun
in·​vade | \ in-ˈvād How to pronounce invade (audio) \
invaded; invading

Medical Definition of invade

1 : to enter and spread within either normally (as in development) or abnormally (as in infection) often with harmful effects protect the body from invading viruses branches of a nerve invade the skin area
2 : to affect injuriously and progressively gangrene invades healthy tissue

Other Words from invade

invader \ -​ˈvād-​ər How to pronounce invader (audio) \ noun

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invaded; invading

Legal Definition of invade

1 : to encroach upon : infringe invading a constitutional right
2 : to make payments out of (a fund from which payments are not ordinarily made) authorized the trustee to invade the principal for educational expenses

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More from Merriam-Webster on invade

Thesaurus: All synonyms and antonyms for invade

Rhyming Dictionary: Words that rhyme with invade

Spanish Central: Translation of invade

Nglish: Translation of invade for Spanish Speakers

Britannica English: Translation of invade for Arabic Speakers

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