Answer: intrenches

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