vŏlūbĭlĭtas, ātis, f. [volubilis],
I a rapid whirling motion.
I Lit.: mundi, Cic. N. D. 2, 19, 49; id. Fat. 19, 43; id. Univ. 10; Ov. F. 6, 271; App. Asclep. p. 100, 41.—
II Transf., roundness , round form : fracta capitis latissima, Ov. M. 12, 434.—
III Trop.
A Of speech, rapidity , fluency , volubility : linguae volubilitas, Cic. Planc. 25, 62: flumen aliis verborum volubilitasque cordi est, id. Or. 16, 53; id. de Or. 1, 5, 17: nimia vocis, Quint. 11, 3, 52 (opp. tarditas); 10, 1, 8; Plin. Ep. 5, 20, 4.—
B Of fate, changeableness , mutability : quod temere fit caeco casu et volubilitate fortunae, Cic. Div. 2, 6, 15; Plin. 37, 1, 2, § 3.