umbrātĭcus

a, um, adj.

umbra

I. of or belonging to the shade, i. e. to retirement, seclusion, or leisure: homo, Plaut. Curc. 4, 3, 24.—
II. Esp., retired, private, contemplative (opp. forensis): Epicureorum delicata et umbratica turba, Sen. Ben. 4, 2, 1: solitaria et velut umbratica vita, Quint. 1, 2, 18 Zumpt N. cr. (al. umbratili): doctor, Petr. 2: litterae, Plin. Ep. 9, 2, 3: negotium, Gell. 3, 1, 10.
Lewis & Short
A Latin Dictionary, 1879
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