Definition of invade in English:



  • 1 (of an armed force) enter (a country or region) so as to subjugate or occupy it:

    ‘during the Second World War the island was invaded by the Axis powers’
    • ‘Mongolian forces invaded Koryo in 1231 and occupied the kingdom until 1368.’
    • ‘On the pretext of a threat to their security, they invade an independent country far away from home.’
    • ‘My father was part of the force that would have invaded the mainland.’
    • ‘Hitler invaded Poland on 1 September 1939.’
    • ‘His legend was born out of the Battle of Badon Hill, a battle which devastated the invading Saxon army.’
    • ‘No doubt his resolution was steeled by news of disasters from the front, as Prussia entered the war and prepared to invade French territory.’
    • ‘The president went to war to establish the principle you cannot unilaterally invade another country.’
    • ‘Then, on November 5th, 1881, a force of 1589 soldiers and armed police invaded the village.’
    • ‘She was still in Hong Kong when the Japanese forces invaded that territory in 1941.’
    • ‘William spent the winter months preparing and then, once ready, waited for the right moment to invade the country.’
    • ‘The island is invaded by outsiders.’
    • ‘But it was your country that wanted to invade this place.’
    • ‘I am just inquiring, what was the British tradition in relation to maintaining discipline of its forces when they were invading countries like India?’
    • ‘Certainly they're not going start a war, chemical, biological or nuclear within the country unless we provoke them to it by invading the country.’
    • ‘They were the first casualties since the allies invaded the country.’
    • ‘The invading army numbered approximately 100,000 troops.’
    • ‘For half a century they held out against the invading Romans.’
    • ‘The territory was invaded first by Scandinavians and later by the Normans, to be ruled by a French-speaking monarchy and nobility until the 15th century.’
    • ‘British armed forces invaded Mesopotamia in 1914 with promises of freedom—from the Turks.’
    • ‘The book was probably taken to Ireland by the monks of Iona when they were put to flight by invading Vikings at the beginning of the 9th century.’
    occupy, conquer, capture, seize, annex, win, gain, secure
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    1. 1.1 Enter (a place, situation, or sphere of activity) in large numbers, especially with intrusive effect:
      ‘demonstrators invaded the Presidential Palace’
      • ‘Then, activists invaded the public space of lunch counters and voter registration offices simply to eat lunch and register to vote.’
      • ‘After protesters emerged from invading the conference centre, hundreds of people staged an impromptu march around the vast hall.’
      • ‘Depending on the size of the bog garden and the maintenance levels, some reeds and rushes should be avoided because of the tendency to completely invade the area.’
      • ‘Chitambo community relations coordinator, Fredrick Mbulwe said the project started last September to reduce the number of elephant cases invading the area.’
      • ‘What is happening on the football terraces, and now invading the cricket fields, encourages one to believe the spirit of English sportsmanship is in decline.’
      • ‘For the patients of Oregon State Mental Hospital, the experience of having the cast and crew invade their world turned out to be a positive one.’
      • ‘One irritatingly clever woman in the back kept offering solid suggestion, such as a new ramp to the site off Highway 20 to prevent a lot of traffic from invading the area.’
      • ‘Within his elaborate composition, this pale blue curtain ended up by invading the background space of the scene and almost completely concealed it.’
      • ‘Government embarked in 2000 on land reforms which saw veterans of the liberation war along with pro-government supporters invading white-owned farms.’
      • ‘Detailed field experiments on current generation GM crops show that in a range of environments they are very unlikely to invade the countryside and become problematic plants.’
      • ‘Well, the big deal is that suburbia is rapidly invading areas that were once considered more natural than man-made.’
      • ‘The minute he said that a heavy atmosphere of silence invaded the place.’
      • ‘Nelson had managed to round up about 600 of the animals, before activists once again invaded his farm on October 23 and released the recaptured animals.’
      • ‘I refer to the hordes of people from cheap hotels, apartments and cruise ships who invade the space at Sandy Lane.’
      • ‘We are used to wildlife invading our living rooms.’
      • ‘Swindon's Sea Scouts invaded a shopping centre car park to raise money for a new safety boat.’
      • ‘Datura ferox seeds were collected from plants invading soybean fields in Junín, province of Buenos Aires, Argentina.’
      • ‘Ramblers never wanted the right to invade the countryside, just the opportunity to appreciate it.’
      • ‘He was someone special enough that they could let him invade their comfortable place.’
      • ‘The crickets chirped while the sky ahead turned even darker, the clouds invading the sky and emerging the triumphant winner.’
      permeate, pervade, fill, spread over, spread through, diffuse through, imbue, perfuse, be disseminated through, flow through
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    2. 1.2 (of a parasite or disease) spread into (an organism or bodily part):
      ‘sometimes the worms invade the central nervous system’
      • ‘Rarely, the infection invades the liver and causes an abscess.’
      • ‘If so, perhaps the cell surface would become more amenable to invading bacteria.’
      • ‘How platelets help cancer invade other tissues Category: Cancer / Oncology News’
      • ‘The next time the mosquito feeds, the parasites invade a new victim.’
      • ‘Through a series of steps called the immune response, the immune system attacks organisms and substances that invade our systems and cause disease.’
      • ‘Scientists do not know why some people infected with West Nile virus have no symptoms or a mild flu-like illness, while in others the virus invades the central nervous system and causes paralysis or coma.’
      • ‘Tiny organisms that invade the body cause infections that can make you ill.’
      • ‘Neutrophils play a key role in the body's defense against invading bacteria.’
      • ‘The inevitable anomaly exists as to how pathogens invade plants containing potentially toxic levels of constitutive antifungal compounds.’
      • ‘Plants are exposed to a great number of pathogenic microorganisms, but a relatively small proportion of them are able to invade plants and cause diseases.’
      • ‘Increases in urinary progestins and estrogens may lead to a decreased ability of the lower urinary tract to resist invading bacteria.’
      • ‘Now when anything invades another cell, or particularly when a parasite invades a red blood cell, they have to multiply.’
      • ‘Vaccines can stimulate the immune system to produce antibodies or specialized cells or both to stop invading viruses.’
      • ‘This cancer can invade nearby tissue but rarely, if ever, spreads (metastasizes).’
      • ‘They are not normally present in significant quantities until a plant is invaded by disease.’
      • ‘The most common type of granulocyte, the neutrophils, move to infected parts of the body to engulf and consume invading bacteria.’
      • ‘This destroys more T-cells, which damages the body's ability to fight off invading germs and disease.’
      • ‘The low iron levels associated with infection are the body's way of keeping iron away from invading bacteria.’
      • ‘It is also the source of our immune system's ability to consume or otherwise incorporate invading bacteria and sometimes to benefit by their presence.’
      • ‘Barely two months later, the insidious disease had invaded Carol's lungs and brain.’
    3. 1.3 Encroach or intrude on:
      ‘he felt his privacy was being invaded’
      • ‘Fifty-one percent thought the press intruded too much on the public involved in news stories, although 40 percent thought it was justifiable to invade the privacy of politicians.’
      • ‘Yes, but to be famous is, if you like privacy, it invades your privacy and takes that away from you.’
      • ‘He dislikes being in the headlines, resents teammates invading his space, and is never happier than when walking his dogs, Billy and Molly, or drinking beers in his kitchen rather than his local pub.’
      • ‘The possibilities include adding extra points for financially motivated hackers, or for intruders that invade an individual's privacy.’
      • ‘I just really felt like I'd be intruding, invading their privacy.’
      • ‘Civil liberties groups, however, have raised concerns that the long lens of the law invades the privacy of innocent residents.’
      • ‘Critics have charged that the program will give the defence department the power to invade personal privacy.’
      • ‘Some dads invade privacy this way to ease anxieties about how fast their daughters are growing up.’
      • ‘He asked as he advanced across the room, pausing a few inches from Trey, completely invading his personal space.’
      • ‘I have rarely encountered a celebrity who has so voraciously invaded her own privacy.’
      • ‘The government claims that children's privacy is invaded by a prosecution involving their parents.’
      • ‘I suggest that the authorities also include the removal of massive boom boxes which invade our privacy and serenity.’
      • ‘The number of stars attempting to bring cases to court or objecting to regulatory bodies because they feel their privacy has been invaded has jumped in recent years.’
      • ‘Many Americans think their privacy is being invaded, and they're right.’
      • ‘I felt like my privacy was invaded, and I could never trust them again.’
      • ‘Bobby stepped forward, completely invading Paul's personal space in a gesture that was deliberately challenging.’
      • ‘He apologizes for invading her space, says he won't bother her anymore, and disappears.’
      • ‘No one invaded my privacy and I could sleep soundly through the night.’
      • ‘She couldn't stand it, the way he continue to invade her space and kiss her in such a way that it was more of a chore than meaning.’
      • ‘It took me years to get over the first burglary, and now my home and privacy have been invaded again.’
      intrude on, violate, encroach on, infringe on, trespass on, obtrude on, burst in on, interrupt, disturb, disrupt
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Late Middle English (in the sense ‘attack or assault (a person’)): from Latin invadere, from in- into + vadere go.