He did not know a malaria-bearing mosquito from a bat; he knew nothing about tests of drinking water; and in the matters of plumbing and sewage he was as unlearned as he was voluble.
All of them volubly knew, or indignantly desired to know, where all the others had been every minute of the week.
There are no more uses of "voluble" in the book.
Show samples from other sources
And it was ironic to note that one of my most voluble supporters at the meeting was Iris Glover, the alleged root doctor and mistress of darkness whom I once had identified as the greatest threat to my survival on the island.
Pat Conroy -- The Water is Wide
Sandringham grew expansive over Colum’s Rhenish wine, and talked volubly, expounding equally upon the horrors of travel in the Highlands and the beauties of the countryside.