Other forms: encroaching, encroached, encroaches
To encroach is to move gradually into space that is not yours. Encroach on the land, encroaching development, encroach upon his time.
The gradualness is the point, since encroaching happens by inches and is noticed too late. In property law an encroachment can eventually become a right, which is why boundaries are worth defending.
1verbencroachTo move gradually into space that is not yours.
“The city keeps encroaching on the farmland around it as new houses go up.”
encroach is an intruding.
Old French encrochier means to seize with a hook, from croc, a hook.
Old French
encrochier — to seize
Middle English
encrochen
English, today
encroach
Built from
From Middle English encrochen, from Old French encrochier (“to seize”), from Old French en- + croc (“hook”), of gem - origin. More at crook.
Etymology from Wiktionary, CC BY-SA