accroach UK /əˈkɹəʊtʃ/US /əˈkɹoʊtʃ/ verb3 •To hook, or draw to oneself as with a hook. •To usurp, as jurisdiction or royal prerogatives.They had attempted to accroach to themselves the royal power. — 1874 •To encroach. formsaccroached · accroaching · accroaches