infiltrate


in·fil·trate

verb \in-ˈfil-ˌtrāt, ˈin-(ˌ)\

: to secretly enter or join (something, such as a group or an organization) in order to get information or do harm

: to cause (someone) to secretly enter or join a group, organization, etc.

: to pass into or through (something)

in·fil·trat·edin·fil·trat·ing

Full Definition of INFILTRATE

transitive verb
1
:  to cause (as a liquid) to permeate something by penetrating its pores or interstices
2
:  to pass into or through (a substance) by filtering or permeating
3
:  to pass (troops) singly or in small groups through gaps in the enemy line
4
:  to enter or become established in gradually or unobtrusively usually for subversive purposes <the intelligence staff had been infiltrated by spies>
intransitive verb
:  to enter, permeate, or pass through a substance or area by filtering or by insinuating gradually
infiltrate noun
in·fil·tra·tion \ˌin-(ˌ)fil-ˈtrā-shən\ noun
in·fil·tra·tive \ˈin-(ˌ)fil-ˌtrā-tiv, in-ˈfil-trə-\ adjective
in·fil·tra·tor \in-ˈfil-ˌtrā-tər, ˈin-(ˌ)\ noun

Examples of INFILTRATE

  1. The gang was infiltrated by undercover agents.
  2. Attempts to infiltrate undercover agents into the gang have failed.
  3. Water can easily infiltrate the soil.

First Known Use of INFILTRATE

1758

Rhymes with INFILTRATE

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