An example of something that would be described as scrumptious is a delicious and decadent dessert.
Origin of scrumptious
- Perhaps alteration of sumptuous
From American Heritage Dictionary of the English Language, 5th Edition
- Probably an alteration of sumptuous. First noted in 1836. Originally meant "stylish, splendid". For example, a 1864 dictionary of slang lists the meanings of "nice, particular, beautiful". In the sense of "delicious" - from 1881.