Synonyms of fortifications

1 Syllable
block, keep, fort, wall
2 Syllables
barrier, support, earthwork, castle, bastion, buffer, stronghold, bulwark, fastness, fortress, breastwork, outpost
3 Syllables
strengthening, citadel, entrenchment, battlement, parapet, garrison, blockhouse, stockade, defense, presidio, protection
4 Syllables
preparation, barricade, reinforcement, embattlement
5 Syllables
consolidation