infiltrate
verb
in·fil·trate
ˈin-(ˌ)fil-ˌtrāt 
in-ˈfil-
in-ˈfil-
infiltrated; infiltrating
1
: to enter or become established in gradually or unobtrusively usually for subversive purposes
the intelligence staff had been infiltrated by spies
2
: to pass (troops) singly or in small groups through gaps in the enemy line
3
: to pass into or through (a substance) by filtering or permeating
4
: to cause (something, such as a liquid) to permeate something by penetrating its pores or interstices
: to enter, permeate, or pass through a substance or area by filtering or by insinuating gradually
infiltrate
noun
Examples of infiltrate in a Sentence
The gang was infiltrated by undercover agents.
Attempts to infiltrate undercover agents into the gang have failed.
Water can easily infiltrate the soil.
Recent Examples on the Web
Even traditional investors have a way to participate with these ETFs, meaning that the language of blockchain is slowly infiltrating even the most resistant population groups.
—
Lisa Loud, Forbes, 5 Nov. 2024
Israel has alleged that the United Nations Relief and Works Agency (UNRWA), which provides support to Palestinian refugees, has been infiltrated by Hamas.
—David Faris, Newsweek, 4 Nov. 2024
Other familiar faces set to reappear include Gong Yoo as the sharp-suited salesman who finds new recruits for the high-stakes competition, Wi Ha-joon as infiltrating detective Hwang Jun-ho, and Lee Byung-hun as a masked frontman overseeing the game and pulling all the strings.
—Amarachi Orie, CNN, 1 Nov. 2024
As technology continues to infiltrate and transform mathematics, the question will only become more pressing.
—Joseph Howlett, Quanta Magazine, 1 Nov. 2024
See all Example Sentences for infiltrate 
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Lisa Loud, Forbes, 5 Nov. 2024
Israel has alleged that the United Nations Relief and Works Agency (UNRWA), which provides support to Palestinian refugees, has been infiltrated by Hamas.
—David Faris, Newsweek, 4 Nov. 2024
Other familiar faces set to reappear include Gong Yoo as the sharp-suited salesman who finds new recruits for the high-stakes competition, Wi Ha-joon as infiltrating detective Hwang Jun-ho, and Lee Byung-hun as a masked frontman overseeing the game and pulling all the strings.
—Amarachi Orie, CNN, 1 Nov. 2024
As technology continues to infiltrate and transform mathematics, the question will only become more pressing.
—Joseph Howlett, Quanta Magazine, 1 Nov. 2024
See all Example Sentences for infiltrate
Dictionary Entries Near infiltrate
Cite this Entry
“Infiltrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infiltrate. Accessed 21 Nov. 2024.
Copy CitationKids Definition
infiltrate
verb
in·fil·trate
in-ˈfil-ˌtrāt
ˈin-(ˌ)fil-
ˈin-(ˌ)fil-
infiltrated; infiltrating
1
: to pass into or through by filtering
2
: to enter or become established gradually or secretly
Medical Definition
infiltrate
1 of 2 verb
in·fil·trate
in-ˈfil-ˌtrāt
ˈin-(ˌ)
ˈin-(ˌ)
infiltrated; infiltrating
1
: to cause (as a liquid) to permeate something by penetrating its pores or interstices
infiltrate tissue with a local anesthetic
2
: to pass into or through (a substance) by filtering or permeating
: to enter, permeate, or pass through a substance or area
infiltrate
2 of 2 noun
: something that passes or is caused to pass into or through something by permeating or filtering
especially
: a substance that passes into the bodily tissues and forms an abnormal accumulation
a lung infiltrate
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