Synonyms of entrenchment

1 Syllable
breach, trench, raid
2 Syllables
inroad, trespass, maraud, assault, onslaught, foray
3 Syllables
foxhole, waterway, obtrusion, invasion, intrusion, violation, incursion, irruption, trespassed, transgression, aggression, invasions, trespassing, infraction, offense
4 Syllables
infiltration, impingement, overstepping, infringement, offensive, usurpation
5 Syllables
fortification, fortifications