ETYMOLOGY
from Latin veriloquus (speaking truly)
EXAMPLE
“…Those ungrateful disingenuous Galenists (who always resisting the truth, set this Brazenface on work deceitfully to oppose Haematias.) contrived heretofore a scurrilous Pamphlet against a veriloquous treatise of mine, (namely A Chymical tryal of the Galenists) and injoyned Johnson their Pseudo-Chymist to patronize it…”
From: A Letter Sent to Mr. H. Stubbe,
By George Thomson, 1672
‘Animadversions on Mr. Stubbe’s Answer’
Lexicophilia 