Answer: intrenching

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