Lewis Short
(adjective) : stŭpĭdus, a, um, stupeo
* Strucksenseless, confounded, amazed.
* Lit. (rare but class.): stupida sine animo asto,Plaut. Poen. 5, 4, 79: quid stas stupida? quid taces?id. Ep. 4, 2, 13: stupidi timore obmutuerunt,Auct. Her. 4, 52, 65: Echionis tabula te stupidum detinet,Cic. Par. 5, 2, 37; cf.: populus studio stupidus,Ter. Hec. prol. 4.
* Transf.
* Senseless, dull, stupid, foolish, stolid: Zopyrus physiognomon stupidum esse Socratem dixit et bardum,Cic. Fat. 5, 10: maritus,Mart. 11, 7, 1; cf. Capitol. M. Aur. 29; Juv. 8, 197; Arn. 7, 239.—Sup.: homo, Varr. ap. Non. 400, 12; Tert. adv. Marc. 1, 26.
* Of things: colles, i. e. not susceptible of tillage, Ven. Carm. 3, 12, 39.—Adv. seems not to occur.
Charlton T. Lewis, Charles Short, A Latin Dictionary