encroachment in WordNet English dictionary

1. entry to another's property without right or permission
   trespass  encroachment  violation  intrusion  usurpation 
   
2. influencing strongly
   "they resented the impingement of American values on European culture"
   impingement  encroachment  impact 
   
3. any entry into an area not previously occupied
   "an invasion of tourists"; "an invasion of locusts"
   invasion  encroachment  intrusion