vol·u·ble 
(vŏlyə-bəl)
(vŏlyə-bəl)adj.
1. Marked by a ready flow of speech; fluent.
2.
a. Turning easily on an axis; rotating.
b. Botany Twining or twisting: a voluble vine.
[Middle English, moving easily, from Old French, from Latin volūbilis, revolving, fluent, from volvere, to roll; see wel-2 in the Appendix of Indo-European roots.]
vol′u·bili·ty, volu·ble·ness n.
volu·bly adv.