invade

verb
in·​vade | \in-ˈvād \
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

Synonyms for invade

Synonyms

foray (into), overrun, raid

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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

Some scientists think that Lemierre syndrome may develop when bacteria invades a person’s mucosa, which is the membrane that lines various parts of the body, GARD says. Korin Miller, SELF, "A 23-Year-Old College Student Died From Lemierre Syndrome, a Rare Infection She Thought Was Tonsillitis," 6 Nov. 2018 At one point, militants invaded the family home and abducted her father. Jenna Sauers, Harper's BAZAAR, "South Sudan’s Female Literacy Rate Is Just 16%. This Refugee-Turned-Model is Fighting to Change That.," 23 Aug. 2018 With Hitler’s invading armies poised to overrun Moscow, Soviet leader (and erstwhile bank robber) Joseph Stalin ordered key personnel to evacuate the capital. Tim Folger, Discover Magazine, "Chance Encounters," 17 Aug. 2018 Also, players can invade each other’s games a la Dark Souls, taking over demons and trying to kill each other. Hayden Dingman, PCWorld, "This week in games: Battlefield V teases its battle royale mode, Deep Silver acquires TimeSplitters," 17 Aug. 2018 The sun reaches the bare soil causing it to dry out more quickly, and weeds are better able to invade the lethargic turf. Neil Sperry, star-telegram, "Here’s your gardening to-do list for the second part of the summer," 11 July 2018 The animals most likely to invade urban environments are, unsurprisingly, the cleverest, and tend to exhibit plucky behavioral traits such as curiosity about new things, boldness and the ability to innovate in unfamiliar situations. Katherine J. Wu, Smithsonian, "How Humans Created the Ultimate Superpests," 9 July 2018 Meanwhile, in the east, two forces were preparing to invade Naples: the Hungarians, and the Black Death. Anne Thériault, Longreads, "Queens of Infamy: Joanna of Naples," 3 July 2018 As part of the sponges’ natural defense against other organisms invading their space, these microbes produce compounds that keep the invaders away and sponges thriving undersea. Anne Geggis, Sun-Sentinel.com, "Sea sponges may hold key to fighting killer infections," 22 June 2018

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

Middle English, from Latin invadere, from in- + vadere to go — more at wade

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Statistics for invade

Last Updated

14 Nov 2018

Look-up Popularity

Time Traveler for invade

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

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More Definitions for invade

invade

verb

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)

invade

verb
in·​vade | \in-ˈvād \
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 \
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 \ noun

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in·​vade
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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Comments on invade

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