1. (

• invasion ,
• encroachment ,
• intrusion

) any entry into an area not previously occupied; "an invasion of tourists"; "an invasion of locusts" ;

2. (

• trespass ,
• encroachment ,
• violation ,
• intrusion ,
• usurpation ,

) entry to another's property without right or permission ;

3. (

• impingement ,
• encroachment ,
• impact

) influencing strongly; "they resented the impingement of American values on European culture" ;