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before you can say Jack Robinson
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Idioms and Phrases
Also, quicker than you can say Jack Robinson . Almost immediately, very soon, as in I'll finish this book before you can say Jack Robinson . This expression originated in the 1700s, but the identity of Jack Robinson has been lost. Grose's Classical Dictionary (1785) said he was a man who paid such brief visits to acquaintances that there was scarcely time to announce his arrival before he had departed, but it gives no further documentation. A newer version is before you know it , meaning so soon that you don't have time to become aware of it (as in He'll be gone before you know it ).Advertisement
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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