adjective, jam·mi·er, jam·mi·est. British Informal.
Origin of jammy
Examples from the Web for jammy
Historical Examples of jammy
It ain't quite our up-to-date kibosh, o' course, but the way as that Sam chewed the rag was just jammy.
He was succeeded by his eldest son James, afterwards known as Jammy Lowther.The Vale of Lyvennet
John Salkeld Bland
I can't put it down, all jammy, on the clean napkin on the tray.The Flaming Sword in Serbia and Elsewhere
Mabel Annie Boulton Stobart
Many thanks, my pretties, many thanks for thus embracing me with this jammy accolade.