1. comparative form of jammy: more sticky or covered with jam
2. comparative form of jammy: luckier or more fortunate
Usage: British informal

Examples

• His fingers were jammier after eating the second piece of toast.
• The kitchen counter became jammier with each jar she opened.
• You’re even jammier than I thought, winning twice in a row.
• She felt jammier than her friends who had to work weekends.
• The sticky bun was jammier than the plain one.
• He’s getting jammier with each lottery ticket he buys.