I looked it up while editing a piece, just to make certain I’d used it correctly. So happy to confirm I have because I lo-o-o-ove onomatopoetic words. And if any word sounds like what it means, judder is one.
I recall the time years ago when the front landing gear of my plane locked up before reaching takeoff speed. Shook the bejeesus out of the plane and contents, yours truly included. And you can reproduce the sound it made if you say judderjudderjudderjudder… really fast over and over.
It really is a perfect word.
Of course, the sounds the passengers made that night were of a different nature.