- citadel
- donjon
- fortress
- keep
- stronghold
Synonyms for arcis
- alo – cherish, keep, maintain, nourish, support, sustain
- arx – citadel, donjon, fortress, keep, stronghold, town
- castellum – castle, citadel, fort, fortress, refuge, shelter
- castrum – castle, fort, fortified encampment, fortress, station
- conservo – conserve, hold to, keep, maintain, to preserve
- moenia – castle, city, dwelling, fortifications of a city, fortress, mansion, ramparts, walled town, walls
- obtineo – keep, maintain, possess, to continue, to gain, to hold
- pugnaculum – fortress
- reservo – hold back, keep, keep back, preserve, reserve
- retineo – affirm, detain, keep, maintain, not let go, restrain, to hold back, to remember
- servo – guard, keep, observe, protect, reserve, save, serve, to preserve, to watch over
- teneo – endure, hold, keep, know, maintain, persevere, persist, possess, to grasp, to hold, to keep on, to occupy, understand