Synonyms and related words :
air attack, air raid, air strike, boarding, encroachment, entrance, entrenchment, escalade, fire raid, foray, impingement, imposition, infiltration, influx, infraction, infringement, injection, inroad, insinuation, interference, interjection, interloping, interposition, interposure, interruption, intervention, intrusion, invasion, irruption, obtrusion, overstepping, raid, razzia, saturation raid, scaling, shuttle raid, transgression, trespass, trespassing, unlawful entry, usurpation