In a spasmodic manner; by fits and starts; by spasmodic action or procedure.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. with spasms
ad. in spurts and fits
Word Usage
"Hmmm. I can think of another word-similar but not quite the same as "spasmodically" - to describe Mad Nad and her blogging, but apparently the word's not politically correct these days."