adj changeable; unstable; fickle.
2. voluble ·adj having the power or habit of turning or twining; as, the voluble stem of hop plants.
3. voluble ·adj easily rolling or turning; easily set in motion; apt to roll; rotating; as, voluble particles of matter.
4. voluble ·adj moving with ease and smoothness in uttering words; of rapid speech; nimble in speaking; glib; as, a flippant, voluble, tongue.