"Scrump-diddly-umptious" 點解?

Q:"Scrump-diddly-umptious" 點解?
A:Scrump-diddly-umptious是一個俚語。據稱是由英國兒童文學作家、劇作家和短篇小說作家Roald Dahl所創話的一字。它的意思其實是:
(1)extremely tasty and delicious
(2)really good and wonderful
(3)fun/joyful

即用來形容某一物件極好/很好/很令人高興之意,例如:
(1)this biscuit is scrumdiddlyumptious(這塊餅乾極好吃!!)
(2)The movie is scrumdiddlyumptious!!

其他歷史沿用資料:

1962 _Marion ( Ohio ) star_ 23 Oct. 5 (advt.) Scrumdiddliumptious!* Walt Disney's happiest twosome...Lady and the Tramp. *It means fun for everyone!

1962 _Press Gazette_ ( Hillsboro , Ohio ) 27 Nov. 2 (advt.)
Scrumdidliumptious is the word for Walt Disney's happiest motion
picture, Lady and the Tramp.

1971 _Oakland Tribune_ 30 May (advt. for Willy Wonka's Candy Factory)Now you can make your own scrumdidilyumptious candy at home.

1971 _New York Times_ 30 June 29 (advt. for "Willy Wonka & The
Chocolate Factory") It's scrumdidilyumptious!

1971 _Lincoln ( Neb. ) Star_ 25 July 3F /3
Technically, the film is a scrumdidilyumptious (as they say in the movie) delight.

1972 _Chicago Tribune_ 17 Nov. C11/6
"Scrumdidliumptious" is the name of a new candy bar. ... "Scrumdidliumptious," by the way, was anadjective used in the movie version of "Willy Wonka and the ChocolateFactory," which was financed by Quaker.

1973 _Ironwood ( Mich. ) Daily Globe_ 17 May 7 (advt.)
Scrumdiddly~umptious! We've just about run out of superlatives to
describe Bruno's Italian Bread ahd Hard Rolls.

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它基本上可稱它是個合成字,其實是由Scrumptious及diddly兩個字組成:

Scrumptious的是絕妙,極好之意;相反diddly卻是指無價值,平凡之意

不過似乎Scrump-diddly-umptious一字只表達了絕妙,極好之意?為什麼呢?

而跟據下文其實當中diddly可能是用作強調作用,又或表達一種合成意義:

“In these cases, inclusion of an adjective (frequently an expletive) within another morpheme can be used to add extra emphasis and convey a combined meaning.
Eg. fanbloodytastic
So in this case scrumpdiddlyumptious conveys a meaning along the lines of:
‘very Scrumptious and rather diddly’

即其實Scrump-diddly-umptious想表達的是“極好而非無價平凡”的事物

有極好之意