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