Answer: entrenches

AnswerCrossword Clue
entrenchesENTRENCH, to fix firmly, also INTRENCH
entrenchesEstablish (an attitude, habit, or belief) so firmly that change is very difficult or unlikely
entrenchesEstablish (a person or their authority) in a position of great strength or security
entrenchesApply extra legal safeguards to (a right, esp. a constitutional right, guaranteed by legislation)
entrenchesEncroach or trespass upon
entrenchesEstablish (a military force, camp, etc.) in trenches or other fortified positions