infiltrate

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UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɪnfɪltreɪt/

US:USA pronunciation: IPAUSA pronunciation: IPA/ɪnˈfɪltreɪt, ˈɪnfɪlˌtreɪt/

US:USA pronunciation: respellingUSA pronunciation: respelling(in fil′trāt, in′fil trāt′)

Inflections of 'infiltrate' (v): (⇒ conjugate)

infiltrates: v 3rd person singular

infiltrating: v pres p

infiltrated: v past

infiltrated: v past p

in•fil•trate /ɪnˈfɪltreɪt, ˈɪnfɪlˌtreɪt/USA pronunciation v., -trat•ed, -trat•ing.

Militaryto move into (an enemy country, etc.) secretly to do harm: [~ + object]Spies had infiltrated enemy headquarters.[no object]They had infiltrated into enemy territory.

in•fil•tra•tion /ˌɪnfɪlˈtreɪʃən/USA pronunciation n. [uncountable]infiltration behind enemy lines.
in•fil•tra•tor, n. [countable]:The infiltrator had penetrated the high command.

in•fil•trate (in fil′trāt, in′fil trāt′),USA pronunciation v., -trat•ed, -trat•ing, n.
v.t.

to filter into or through; permeate.
to cause to pass in by filtering.
Militaryto move into (an organization, country, territory, or the like) surreptitiously and gradually, esp. with hostile intent:The troops infiltrated the enemy lines.
Militaryto pass a small number of (soldiers, spies, or the like) into a territory or organization clandestinely and with hostile or subversive intent:The intelligence agency infiltrated three spies into the neighboring country.

v.i.

to pass into or through a substance, place, etc., by or as by filtering.
Pathologyto penetrate tissue spaces or cells.

something that infiltrates.
Pathologyany substance penetrating tissues or cells and forming a morbid accumulation.

in-² + filtrate 1750–60

Collins Concise English Dictionary © HarperCollins Publishers::

infiltrate /ˈɪnfɪlˌtreɪt/ vb

to undergo or cause to undergo the process in which a fluid passes into the pores or interstices of a solid; permeate
to pass undetected through (an enemy-held line or position)
to gain or cause to gain entrance or access surreptitiously: they infiltrated the party structure

something that infiltrates

Etymology: 18th Century: from in-² + filtrateˌinfilˈtration n ˈinfilˌtrative adj ˈinfilˌtrator n

'infiltrate' also found in these entries (note: many are not synonyms or translations):

in- - embed - infiltration

In Lists: Spies and espionage, more...

Synonyms: invade, more...

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⇱ infiltrate - WordReference.com Dictionary of English

infiltrate