1. Cause (a liquid) to enter by penetrating the interstices 
2. Enter a group or organization in order to spy on the members
   "The student organization was infiltrated by a traitor"
   - penetrate 
3. Pass into or through by filtering or permeating
   "the substance infiltrated the material" 
4. Pass through an enemy line; in a military conflict
   - pass through

Derived forms: infiltrates, infiltrating, infiltrated

See also: infiltration, infiltrator

Type of: fall in, filter, get together, go across, go through, join, pass, percolate, permeate, sink in

Encyclopedia: Infiltrate

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