ETYMOLOGY
from Latin balbutire (to stammer) + -ate
EXAMPLE
“… But his fears were not justified by the result. The lady felt for him; and even went so far, when he began to balbutiate, as to help him with nearly the half of the sentence; …”
From: The Castes of Edinburgh,
By John Heiton, 1861
Chapter VII, The Female Philosophers
Lexicophilia 