Lewis Short
(adjective) : immōtus (inm-), a, um, in-motus
* Unmoved, immovable, motionless (mostly poet. and in post-Aug. prose).
* Lit.: (illa arbor) immota manet,Verg. G. 2, 293: (Ceres) Sub Jove duravit multis immota diebus,Ov. F. 4, 505: supercilia (opp. mobilia),Quint. 11, 3, 79: sceptrum,id. ib. § 158: aquae,i. e. frozen,Ov. Tr. 3, 10, 38: aër,Plin. 17, 24, 36, § 222: apum examina,Col. 9, 4, 19: serenus et immotus dies,calm,Tac. H. 1, 86; Plin. Ep. 2, 7, 6; id. Pan. 82: terrarum pondus sedet immotum,Sen. Prov. 1, 2: mare,id. Suas. 1, 1: cervix,id. ib. 6, 17: legio,Tac. A. 14, 37: vultus,id. ib. 2, 29.
* Trop., unmoved, unshaken, undisturbed, steadfast, firm: mens immota manet,Verg. A. 4, 449: manent immota tuorum Fata tibi,id. ib. 1, 257; cf.: immota manet fatis Lavinia conjux,id. ib. 7, 314: immotas praebet mugitibus aures,unmoved,Ov. M. 15, 465: nympha procis,Val. Fl. 5, 112: adversus turmas acies,Liv. 10, 14, 16; 21, 55, 10: immotus iis,Tac. A. 15, 59: immota aut modice lacessita pax,id. ib. 4, 32: fides sociis,Val. Fl. 3, 598: felicis animi immota tranquillitas, Sen. de Ira, 2, 12, 6: constantia,id. Const. 5, 4: gaudium,id. Vit. Beat. 4, 5: animus,Lact. 6, 17, 22.— In neutr.: si mihi non animo fixum immotumque sederet, Ne, etc.,immovable, unchangeable,Verg. A. 4, 15; so with an object-clause: immotum adversus eos sermones fixumque Tiberio fuit non omittere caput rerum,Tac. A. 1, 47.
Charlton T. Lewis, Charles Short, A Latin Dictionary