sententĭōsus

a, um, adj.

sententia, II. B. 2.

I. full of meaning, pithy, sententious (rare but Ciceron.): sententiosum et argutum genus dictionis, Cic. Brut. 95, 325.— Adv.: sententĭōsē.
A. Full of meaning, suggestively: sententiose (dicere) sine verborum et ordine et modo (opp. composite) et apte sine sententiis, Cic. Or. 71, 236: oratione habitā graviter et sententiose, id. Inv. 1, 55, 106.—
B. Sententiously: saepe sententiose ridicula dicuntur, Cic. de Or. 2, 71, 286.
Lewis & Short
A Latin Dictionary, 1879
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