intransitive verb. undefined

intransitive verb. To pass (troops, for example) surreptitiously into enemy-held territory.

intransitive verb. To penetrate with hostile intent.

intransitive verb. To enter or take up positions in gradually or surreptitiously, as for purposes of espionage or takeover.

intransitive verb. To cause (a liquid, for example) to permeate a substance by passing through its interstices or pores.

intransitive verb. To permeate (a porous substance) with a liquid or gas.

intransitive verb. To gain entrance gradually or surreptitiously.

noun. One that infiltrates, especially an abnormal substance that accumulates gradually in cells or body tissues.

To pass by filtration; percolate through pores or interstices.

To pass into or through the pores or interstices of; filter into or through.

noun. That which infiltrates; specifically, in pathology, the substance which passes into the tissues to form a morbid accumulation, as the fat of fatty infiltration.

transitive verb. To penetrate gradually; -- sometimes used reflexively.

intransitive verb. To enter by penetrating the pores or interstices of a substance; to filter into or through something.

intransitive verb. To enter secretly (into an organization, territory, etc.) for hostile purposes, such as spying or sabotage; ; also used transitively.

verb. To surreptitiously penetrate, enter or gain access.

verb. To cause a fluid to pass through a substance by filtration.

verb. To send soldiers through gaps in the enemy line.

verb. To move from a vein, remaining in the body.

verb. pass through an enemy line; in a military conflict

verb. enter a group or organization in order to spy on the members

verb. cause (a liquid) to enter by penetrating the interstices

verb. pass into or through by filtering or permeating

"This first episode picks up where "Half-Life 2" ended: the towering alien fortress you and female friend Alyx managed to infiltrate is about to blow in a very big way."

infiltrated  infiltrating  infiltration  infiltrative  infiltrator  

fall in  filter  get together  go across  go through  

absorb  adsorb  advance against  advance upon  assimilate  

infiltrated  infiltrates  infiltrating