Synonyms of citadel

1 Syllable
keep, fort, château
2 Syllables
manor, towers, outwork, spotters, castle, bastion, bastions, tower, donjon, redoubt, stronghold, bulwark, fastness, lookout, fortress, fasthold, spotter
3 Syllables
fortresses, minaret, garrison, garrisons, blockhouse, defense, safehold, presidio
4 Syllables
acropolis, belvedere
5 Syllables
fortification, fortifications