vol ‧ u ‧ ble /ˈvɒljəb ə l, ˈvɒljʊb ə l $ ˈvɑː-/ BrE AmE adjective formal
[ Date: 1300-1400 ; Language: Old French ; Origin: 'changing, going around' , from Latin volubilis , from volvere 'to roll' ]
talking a lot or talking quickly:
Clarissa was extremely voluble on the subject of good manners.
—volubly adverb