volubility

plural volubilities

1. uncountablethe state of being voluble

   His volubility had left him at last, and he sank down wearily on my sofa. I felt that no words of condolence availed, and I let him lie there quietly.

   1919, W[illiam] Somerset Maugham, “chapter 36”, in The Moon and Sixpence, [New York, N.Y.]: Grosset & Dunlap Publishers […], →OCLC

   2 more examples

   We sat down at a table; the Tsarist ordered wine, and Valeria, after applying a wet napkin to her knee, went on talking into me rather than to me; she poured words into this dignified receptacle with a volubility I had never suspected she had in her.

   1955 September 15, Vladimir Nabokov, Lolita, Paris: The Olympia Press […], →OCLC

   But there is no help for him — or for us, his readers — no way for him to stop the chattering by which he means to make his meaning clear […] Freddie Greenfield is doomed, then, and we are doomed along with him, victims of his volubility.

   1976 December 18, Rudy Kikel, “The Doomsday Book by the Jewish Comedian”, in Gay Community News, volume 4, number 25, page 14

2. countablethe degree to which someone is voluble