Is “Hypogeum” a Scrabble word?
Yes
HYPOGEUM
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Hypogeum
/hɪpəˈd͡ʒiːəm/
noun
1.An underground room or cavern (also used figuratively).