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/ˈkætəkuːm/ · noun
(often plural) An underground system of tunnels and chambers with recesses for graves, used (in former times) as a cemetery; a tunnel system used for burying the dead, as in Paris or Ancient Rome..
Meronyms: crypt, ossuary
Use catacomb when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Catacomb means (often plural) An underground system of tunnels and chambers with recesses for graves, used (in former times) as a cemetery; a tunnel system used for burying the dead, as in Paris or Ancient Rome..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Meronyms: crypt, ossuary
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