infiltrate(verb) pass through an enemy-line; in a military conflict
(verb) pass into or through by filtering or permeating; "the substance infiltrated the material"
(verb) cause (a liquid) to enter by penetrating the interstices
(verb) enter a group or organization in order to spy on the members; "The student organization was infiltrated by a traitor"
Source:
WordNet 2.0 Copyright 2003 by Princeton University. All rights reserved.
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