encroach
verb[I]
us/ɪnˈkroʊtʃ/to takecontrolorpossessionof something in agradualway and often without beingnoticed:
Farmers encroached onforestlandtogrowcrops.
Thesedevicesare encroaching on people’sprivacy.
encroachment
noun[C/U]us/ɪnˈkroʊtʃ·mənt/
[C]Human encroachmentthreatensthebirds’nestingsites.