verb

infiltrar

infiltrate

Infiltrar means to infiltrate or to seep into. It can refer to:

Entering or placing someone inside an organization or group secretly, often to gather information: infiltrar un agente en una organización — “to plant an agent in an organization.”
A liquid penetrating a material or space: el agua se infiltra en el suelo — “water seeps into the ground.”
Administering a substance into body tissue, especially as a medical treatment: infiltrar un anestésico — “to inject an anesthetic into tissue.”

The reflexive form infiltrarse often means “to infiltrate” or “to seep in.”

Infiltrar is a regular -ar verb. It can be transitive, taking a direct object, or used reflexively.

It comes from Latin-derived elements meaning “into” and “filter”: in- + a root related to filtering.

penetrar — “to penetrate”; broader and does not necessarily imply secrecy.
introducir — “to introduce” or “insert”; does not by itself suggest covert entry.
filtrarse — “to seep through” or “leak”; particularly common for liquids.
extraer — “to extract”; an approximate opposite when something has been inserted or introduced.

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Lograron infiltrarse en nuestra red sin ser descubiertos.verb

They managed to infiltrate our network without being discovered.

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