There are now two debating-clubs, seminaries of multiloquence.    From Wordnik.com.  [The Atlantic Monthly, Volume 06, No. 38, December, 1860] Reference

A friend of mine, a lady, when fresh in the country once compromised herself rather astonishingly by lending an ear to their multiloquence, instead of resolutely refusing her attention to all communication but that consisting of "yea, yea," and "nay, nay.".    From Wordnik.com.  [Lippincott's Magazine of Popular Literature and Science Volume 15, No. 87, March, 1875] Reference

And so their writing is commonly marred by an undue insistence, a shrillness, a certain quality of multiloquence.    From Wordnik.com.  [Journalism for Women A Practical Guide] Reference

Many is the time, as the weariness of my spirit witnesseth, that I have heard Sah-luma rehearse, -- but never in all my experience of his prolix multiloquence, hath he given utterance to such a senseless jingle-jangle of verse-jargon as to-night!.    From Wordnik.com.  [Ardath] Reference