Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To pass (troops, for example) surreptitiously into enemy-held territory.
  • transitive v. To penetrate with hostile intent: infiltrate enemy lines; terrorists that had infiltrated the country.
  • transitive v. To enter or take up positions in gradually or surreptitiously, as for purposes of espionage or takeover: infiltrated key government agencies with spies.
  • transitive v. To cause (a liquid, for example) to permeate a substance by passing through its interstices or pores.
  • transitive v. To permeate (a porous substance) with a liquid or gas.
  • intransitive v. To gain entrance gradually or surreptitiously.
  • n. One that infiltrates, especially an abnormal substance that accumulates gradually in cells or body tissues.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To surreptitiously penetrate, enter or gain access.
  • v. To cause a fluid to pass through a substance by filtration.
  • v. To send soldiers through gaps in the enemy line.
  • v. To move from a vein, remaining in the body.

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To enter by penetrating the pores or interstices of a substance; to filter into or through something.
  • intransitive v. To enter secretly (into an organization, territory, etc.) for hostile purposes, such as spying or sabotage; ; also used transitively.
  • transitive v. To penetrate gradually; -- sometimes used reflexively.

from The Century Dictionary and Cyclopedia

  • To pass by filtration; percolate through pores or interstices.
  • To pass into or through the pores or interstices of; filter into or through.
  • n. That which infiltrates; specifically, in pathology, the substance which passes into the tissues to form a morbid accumulation, as the fat of fatty infiltration.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. pass through an enemy line; in a military conflict
  • v. enter a group or organization in order to spy on the members
  • v. cause (a liquid) to enter by penetrating the interstices
  • v. pass into or through by filtering or permeating

Etymologies

Sorry, no etymologies found.

Examples

  • This first episode picks up where "Half-Life 2" ended: the towering alien fortress you and female friend Alyx managed to infiltrate is about to blow in a very big way.

    New Trend in Episodic Games | Impact Lab

  • Don't want to reveal my plan but is the word infiltrate appropriate?

    Latest Articles

  • "The use of the word infiltrate to refer to a child reeks of small minded bigotry."

    Politics.ie - 3,4,5,6,7,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,27,28,29,30,32,33,34,35,36,37,38,39,41,42,48,49,50,52

  • The use of the word infiltrate to refer to a child reeks of small minded bigotry.

    Politics.ie - 3,4,5,6,7,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,27,28,29,30,32,33,34,35,36,37,38,39,41,42,48,49,50,52

  • Co-ed groups of military-age Israelis pretending to be students of a non-existent Tel Aviv "arts school" had earlier that year been caught attempting to visit - "infiltrate" - sensitive U.S. security sites, as authoritatively reported at the time by a number of corporate media outlets.

    Signs of the Times

  • (E.g., the Ho Chi Minh Trail was originally created as a supply line and in order that propagandists, assassins and terrorists could infiltrate from the North into the South, coercing local, indigenous South Vietnamese populations into ideological compliance.) + More generally, Uncle Ho was not the simple nationalist as protrayed by the Western Left, he was a thoroughgoing ideologue and practitioner of Leninist/Stalinist styled totalitarian programs, from instilling a cult of personality to eliminating contenders for nationalist leadership via assassinations and intra-party purges.

    The Volokh Conspiracy » Victims of Communism Day

  • Cossiga, former Italian President, Prime Minister, Minister of the Interior, and one of the founders of the Operation GLADIO covert intelligence unit, encouraged Silvio Berlusconi and current Minister of the Interior Robert Maroni to "do what I did when I was Minister of the Interior," namely infiltrate what so far have been relatively peaceful demonstrations, radicalize them, start riots, then engender public support for a heavy-handed police response.

    Alex Jones' Prison Planet.com

  • Cossiga, former Italian President, Prime Minister, Minister of the Interior, and one of the founders of the Operation GLADIO covert intelligence unit, encouraged Silvio Berlusconi and current Minister of the Interior Robert Maroni to "do what I did when I was Minister of the Interior," namely infiltrate what so far have been relatively peaceful demonstrations, radicalize them, start riots, then engender public support for a heavy-handed police response. translated reads as follows.

    Information Liberation

  • CBS also reported that "Marc Ambinder has a video of an AIP leader explaining that party members" Must 'infiltrate'-his words-the other two parties and push for the cause of Alaskan independence. "

    The Alaskan Independence Party and Palin's Connection

  • They also claim both companies are guilty of bribery because they are part of an overall oil and gas industry effort to "infiltrate" federal regulators by providing favors such as alcohol and drugs, sex, golf and ski trips, concert and sports tickets, and more.

    BP: RICO Law Made To Combat Mafia Used Against Oil Giant In Lawsuits

Wordnik is becoming a not-for-profit! Read our announcement here.

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.