pick-me-up, know-all, know-nothing, go-between, get-together, whodunit. The last word (meaning "a detective story") was obviously coined from the ungrammatical variant of the word-group who (has) done it.
In this group of compounds, once more, we find a great number of neologisms, and whodunit is one of them. Consider, also, the two following fragments which make rich use of modern city traffic terms.
Randy managed to weave through a maze of oneway-streets, no-left-turns, and no-stopping-zones ...
(From A Five-Colour Buick by P. Anderson Wood)
"... you go down to the Department of Motor Vehicles tomorrow and take your behind-the-wheel test."
The structure of most compounds is transparent, as it were, and clearly betrays the origin of these words from word-combinations. The fragments below illustrate admirably the very process of coining nonce-words after the productive patterns of composition.
"Is all this really true?" he asked. "Or are you pulling my leg?"
... Charlie looked slowly around at each of the four old faces... They were quite serious. There was no sign of joking or leg-pulling on any of them.
(From Charlie and the Chocolate Factory by R. Dahl)
"I have decided that you are up to no good. I am well aware that that is your natural condition. But I prefer you to be up to no good in London. Which is more used to up-to-no-gooders."
(From The French Lieutenant's Woman by J. Fowles)
"What if they capture us?" said Mrs. Bucket. "What if they shoot us?" said Grandma Georgina. "What if my beard were made of green spinach?" cried Mr. Wonka. "Bunkum and tommyrot! You'll