Main entry: encroachment, impact, impingement
Definition: influencing strongly
Usage: they resented the impingement of American values on European culture
Main entry: encroachment, violation, usurpation, trespass, intrusion
Definition: entry to another's property without right or permission
Main entry: encroachment, intrusion, invasion
Definition: any entry into an area not previously occupied
Usage: an invasion of tourists; an invasion of locusts