safeguard
verb [ I or T ]
uk/ˈseɪfɡɑːd/ usto protect someone or something so that they are not harmed, damaged, or lost:
New steps are being taken to safeguard medical workers in the war zone.
safeguard (sb/sth) against sth The agency did not consistently install protections to safeguard against unauthorized computer access.
safeguard
noun [ C ]
uk/ˈseɪfɡɑːd/ ussomething that you do or provide in order to protect someone or something from harm, damage, or loss:
safeguard for sth/sb The new laws contain important safeguards for credit card customers.
safeguard against sth Keeping a large cash reserve is, for some airlines, the best safeguard against another bankruptcy.