mōbĭlĭtas, ātis, f. [mobilis], movableness, mobility, activity, speed, rapidity, quickness (class.).
I Lit.: animal mobilitate celerrimā, Cic. N. D. 2, 15, 42: linguae, volubility , id. de Or. 1, 28, 127: equitum, agility, rapidity (opp. stabilitas peditum), Caes. B. G. 4, 33: fulminis, quickness , Lucr. 6, 323. sanare mobilitates dentium, looseness , Plin. 20, 21, 84, § 224.—
II Trop.
A Changeableness, fickleness, inconstancy : quid est inconstantiā, mobilitate, levitate turpius? Cic. Phil. 7, 3, 9: fortunae, Nep. Dion. 6, 1: ingenii, inconstancy of character , Sall. J. 88, 6: vulgi, Tac. H. 5, 8.—
B Quickness, vivacity : opus est naturali quādam mobilitate animi, Quint. 10, 7, 8.