Lewis & Short

stŏlĭdus, a, um, adj. [root star-; Gr. στερεός, firm; cf. stultus; v. Corss. Ausspr. 2, 155 sq.].

  1. I. Unmovable; and hence, slow, coarse, uncultivated, rude (class.; cf.: fatuus, insipiens, stupidus, stultus, insulsus).
    1. B. Lit.: stolidum genus Aeacidarum Bellipotentes sunt magi’ quam sapientipotentes, Enn. ap. Cic. Div. 2, 56, 116 (Ann. v. 187 Vahl.): nam vi depugnare sues stolidi soliti sunt, id. ib. 2, 56, 116 (Ann. v. 109 id.).
  2. II. Dull, senseless, slow of mind, obtuse, stupid, stolid: mī stolido, Plaut. Capt. 3, 4, 123: stulti, stolidi, fatui, fungi, bardi, blenni, buccones, Plaut. Bacch. 5, 1, 2: quid, stolide, clamas? id. Aul. 3, 2, 1; id. Ep. 3, 3, 40; id. Bacch. 3, 6, 19: vix tandem sensi stolidus, Ter. And. 3, 1, 12: indocti stolidique, * Hor. Ep. 2, 1, 184: Lentulus perincertum stolidior an vanior, Sall. ap. Gell. 18, 4, 4 (H. 4, 35 Dietsch): dux ipse inter stolidissimos, Liv. 22, 28, 9: o vatum stolidissime, falleris, Ov. M. 13, 774.
    Of the Stoics, Lucr. 1, 641; 1, 1068.
    1. B. Transf., of things: nihil est stultius neque stolidius, Plaut. Trin. 1, 2, 162; cf.: nullum est hoc stolidius saxum, id. Mil. 4, 2, 33: aures (Midae), Ov. M. 11, 175; cf. barba (Jovis), Pers. 2, 28: vires, Liv. 28, 21, 10: hujus generis causarum alia sunt quieta, nihil agentia, stolida quodammodo, i. e, inert, inoperative, * Cic. Top. 15, 59: stolida impudensque postulatio, Liv. 21, 20: fiducia, id. 34, 46, 8: superbia, id. 45, 3: audacia, Tac. H. 4, 15: procacitas, Mart. 1, 42, 19.
      Hence, adv.: stŏlĭdē, stupidly, stolidly.
  1. I. Lit.: id non promissum magis stolide quam stolide creditum, Liv. 25, 19; 7, 5: laetus, id. 7, 10; 27, 17; cf. Tac. A. 1, 3; Just. 2, 3: stolide castra subgressus, Sall. H. 4, 67 Dietsch.
    Comp., Amm. 19, 5, 2.
  2. II. Transf., of things: stolide tument pulmonea (mala), Plin. 15, 14, 15, § 52.