1. (n.) The entrance for a hostile invasion or encroachment; as making inroads to a competitor's market\; sudden or desultory incursion or invasion; raid; encroachment.

2. (v. t.) To make an inroad into; to invade.

advances air attack air raid air strike attack bankruptcy boarding breakage breakdown breakthrough collapse crack-up crippling damage destruction detriment dilapidation disablement disrepair encroachment entrance entrenchment escalade fire raid foray harm hobbling hurt hurting impairment impingement imposition incapacitation incursion infiltration influx infraction infringement injection injury insinuation interference interjection interloping interposition interposure interruption intervention intrusion invasion irruption loss maiming mayhem mischief mutilation obtrusion overrun overstepping overswarm penetration progress raid razzia ruination ruinousness sabotage saturation raid scaling scathe shuttle raid sickening spoiling transgression trespass trespassing unlawful entry usurpation weakening