inroad (n.)

• attack
• bankruptcy
• boarding
• breakage
• breakdown
• breakthrough
• collapse
• crack-up
• damage
• destruction
• detriment
• dilapidation
• disablement
• disrepair
• encroachment
• entrance
• entrenchment
• escalade
• foray
• harm
• hurt
• hurting
• impairment
• impingement
• imposition
• incursion
• infiltration
• influx
• infraction
• infringement
• injection
• injury
• insinuation
• interference
• interjection
• interposition
• interruption
• intervention
• intrusion
• invasion
• irruption
• loss
• mayhem
• mischief
• mutilation
• overrun
• penetration
• progress
• raid
• ruination
• sabotage
• scaling
• scathe
• spoiling
• transgression
• trespass
• usurpation
• weakening