"Her tendency to discover a touch of sadness had for the nonce disappeared" (Theodore Dreiser). [From Middle English for the nones, for the occasion].--The American Heritage Dictionary of the English Language, 2000.
nonce word n. A word occurring, invented, or used just for a particular occasion; or example, the word mileconsuming in "the wagon beginning to fall into its slow and mileconsuming clatter" (William Faulkner).--The American Heritage Dictionary of the English Language, 2000.
TO THE ENGLISH LANGUAGE:
"The term nonce-word was adopted in the preparation of the OED [Oxford English Dictionary] (1884) "to describe a word which is apparently used only for the nonce." . . . . Because of the special functions, ephemerality, and even eccentricity of such usages, it is not easy to exemplify them. . . . .
THE WORD IN USE
"If you think of anything useful about Delroy, or anything else, I'm at the Holiday Inn for the nonce," I [Spenser] said.
"Nonce. But you can always leave a message on my answering machine in Boston."
"I'd just as soon our conversation was private," Mickey said.
"Me too," I said. "Mum's the word."
"Mum," I said.
"You talk really funny," Mickey said.
"It's a gift." I said.--Parker, Robert B. Hugger Mugger. New York: Putnam, 2000 (243-440).
Nonce is also "a common British insult - generally equivalent to wanker [masturbator], twat [vagina]." The Urban Dictionary adds thirteen more definitions of nonce, each carrying a pejorative nuance of verbal or sexual abuse.--http://www.
A FINAL COMMENT
Originally, this weblog was titled "Worthy Words." But after a while, I decided to invert the words to "Words Worthy" and follow that with the subtitle "Words Worthy of Their Own Weblog," later switching to the present motto, "Words Worthy of Note for the Careful Reader and Writer."