From en.wiktionary.org:
** English
*** Etymology
From [en].
*** Adjective
[en-adj]
1. prone to sputter
2. * {{ quote-book | en | year=1927-1937 | author=Ward Moore | title=Greener Than You Think | chapter= | edition= | url=http://www.gutenberg.org/etext/24246
|passage=It is but a gesture; I expect no coherent words from your clogged and
SPUTTERY pen; but while I am sufficiently like yourself to deceive the public
into thinking you have written what they read, I am not yet great enough
scoundrel to do so without your visiting the scene of your presumed labors.}}
1. * {{ quote-journal | en | date=October 15, 2004 | author=Mark Athitakis; Monica Kendrick; Peter Margasak; Bob Mehr | title=The Treatment | work=Chicago Reader | url=https://securesite.chireader.com/cgi-bin/Archive/abridged2.bat?path=2004/041015/TREATMNT
|passage=On _____ Is an Apparition (Rossbin), the new album by his trio Blue
Collar, he uses puckered curlicues, vocalizations distorted by the horn's
tubing, SPUTTERY stammers, quiet half-valved passages that turn his sound into
a fluid whisper, and even some clear, straightforward long tones.}}