Infiltration and Underpass

Infiltration noun - A process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection).

Underpass and infiltration are semantically related. In some cases you can use "Underpass" instead a noun "Infiltration".

Nearby Words: infiltrate, infiltrated, infiltrator, infiltrating

Underpass noun - An underground tunnel or passage enabling pedestrians to cross a road or railway.

Infiltration and underpass are semantically related. Sometimes you can use "Infiltration" instead a noun "Underpass".