Answer: intrenched

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