1
general::
Phrase(s): encroach (up)on someone or something
to infringe or trespass on someone or something; to move into the space belonging to someone or something. (Upon is formal and less commonly used than on.) • I did not mean to encroach upon your property. • I need lots of space. Don’t encroach on me.
McGrawhill's American Idioms And Phrasal Verbs