I. ˈjədə(r) intransitive verb
( -ed/-ing/-s )
Etymology: probably alteration (probably influenced by jar ) of shudder
: to vibrate with intensity : jar strongly
the motors which clattered protestingly to life, back-firing and juddering — J.L.Rhys
II. noun
( -s )
: the action or sound of juddering
they … found some comfort in the judder of the engines — Audrey Barker