What does infiltrate mean?

Definitions for infiltrate
ɪnˈfɪl treɪt, ˈɪn fɪlˌtreɪtin·fil·trate

This dictionary definitions page includes all the possible meanings, example usage and translations of the word infiltrate.

Princeton's WordNet

  1. infiltrateverb

    cause (a liquid) to enter by penetrating the interstices

  2. infiltrate, penetrateverb

    enter a group or organization in order to spy on the members

    "The student organization was infiltrated by a traitor"

  3. infiltrateverb

    pass into or through by filtering or permeating

    "the substance infiltrated the material"

  4. infiltrate, pass throughverb

    pass through an enemy line; in a military conflict


  1. Infiltrateverb

    To enter secretly (into an organization, territory, etc.) for hostile purposes, such as spying or sabotage; as, the FBI infiltrated into the U. S. communist party's upper echelons; also used transitively; as, to infiltrate the opponent's organization; to infiltrate one's agents into a hostile country.


  1. infiltrateverb

    To surreptitiously penetrate, enter or gain access.

  2. infiltrateverb

    To cause a fluid to pass through a substance by filtration.

  3. infiltrateverb

    To send soldiers through gaps in the enemy line.

  4. infiltrateverb

    To move from a vein, remaining in the body.


  1. infiltrate

    Infiltrate generally refers to the act of secretly entering or gaining access to an organization, place, or system in order to gather information or cause harm. It can also refer to permeation of a substance through a porous material, or the accumulation of a substance within cells or tissues in the field of medicine.

Webster Dictionary

  1. Infiltrateverb

    to enter by penetrating the pores or interstices of a substance; to filter into or through something

  2. Infiltrateverb

    to penetrate gradually; -- sometimes used reflexively

  3. Etymology: [Pref. in- + filtrate: cf. F, s'infiltrer. Cf. Infilter.]

Chambers 20th Century Dictionary

  1. Infiltrate

    in-fil′trāt, v.t. to enter a substance by filtration, or through its pores.—v.t. Infil′ter, to filter or sift in.—n. Infiltrā′tion, the process of infiltrating, or the substance infiltrated.

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  1. Chaldean Numerology

    The numerical value of infiltrate in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of infiltrate in Pythagorean Numerology is: 6

Examples of infiltrate in a Sentence

  1. Prosecutor Croft Michaelson:

    The case really largely turned on his investigative efforts, the effort he had made to successfully infiltrate this terrorist cell that was in our midst in 2012.

  2. Hassan Fedaam:

    We understand that there are members of Daesh trying to infiltrate the province via these displaced people.

  3. Ben Carson:

    The jihadists want to infiltrate our nation. We have to exercise something that even resembles common sense, that would be foolishness to take in people from a region where we don't have any way in making a determination if this person is radicalized already or potentially radicalized.

  4. Ayatollah Ali Khamenei:

    No way, we should not allow them to infiltrate security and defensive installations.

  5. Mike McCaul:

    ISIS themselves have stated their intention to take advantage of the crisis to infiltrate the West.

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Translations for infiltrate

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"infiltrate." Definitions.net. STANDS4 LLC, 2023. Web. 3 Oct. 2023. <https://www.definitions.net/definition/infiltrate>.

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    excessively agitated; distraught with fear or other violent emotion
    • A. greedy
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