ŏpertānĕus

a, um, adj.

opertus

I. concealed, secret (post-Aug.): opertanea sacra, the secret rites of the Bona Dea, Plin. 10, 56, 77, § 156: di opertanei, Mart. Cap. 1, § 44
Lewis & Short
A Latin Dictionary, 1879
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