vaultlike
Like a strongroom
Resembling a vault—either the arched ceiling of a cathedral or the secure chamber of a bank.
A vaultlike ceiling soars overhead with curved stonework.
A vaultlike door is thick, heavy, and impenetrable.
The word emphasizes either architectural grandeur or fortress-like security, depending on context.
Kept within bounds
- sealedClosed to prevent entry
- entombedSealed in burial chamber
- cloisteredSheltered from outside contact
- windowlessHaving no windows
airless · hermetic · insular · secluded · sheltered · interior · recessed · buried
With rounded roof
- curvedSmoothly bent, not angular
- barrelHooped cylindrical vessel
- ribbedWith raised parallel lines
- groinHip-thigh junction
cathedral · apse · nave · cavernous · soaring · keystone · buttressed · gothic
Vast and hollow
- expansiveCovering a large area
- voluminousOf great size
- capaciousHaving ample room
- echoingReflecting sound repeatedly
vast · lofty · towering · grand · palatial · warehouse · hangar · atrium
Impossible to capture
- fortifiedMade more resistant
- lockedFastened with a mechanism
- safeguardedKept from harm
- protectedKept from harm
stronghold · impenetrable · reinforced · armored · tamper-proof · bank · depository · treasury
confined
Kept within bounds
- sealedClosed to prevent entry
- entombedSealed in burial chamber
- cloisteredSheltered from outside contact
windowless · airless · hermetic · insular · secluded · sheltered · interior · recessed · buried · subterranean
domed
With rounded roof
groin · cathedral · apse · nave · cavernous · soaring · keystone · buttressed · gothic · crypt
cavernous
Vast and hollow
- expansiveCovering a large area
- voluminousOf great size
- capaciousHaving ample room
echoing · vast · lofty · towering · grand · palatial · warehouse · hangar · atrium · gallery
impregnable
Impossible to capture
- fortifiedMade more resistant
- lockedFastened with a mechanism
- safeguardedKept from harm
protected · stronghold · impenetrable · reinforced · armored · tamper-proof · bank · depository · treasury · repository
vaultlikecramped
Uncomfortably lacking space
claustrophobic · confined · poky · squat · constricted
vaultlikeaccessible
Able to be reached
unprotected · unsecured · penetrable · vulnerable · exposed