before you can say Jack Robinson

before (one) can say Jack Robinson

Quickly or suddenly. (The true identity of Jack Robinson is unknown.) I'm not far from your house, so I'll be there before you can say Jack Robinson.See also: before, can, jack, Robinson, say

before you can say Jack Robinson

 and quicker than you can say Jack RobinsonFig. almost immediately. (Often found in children's stories.) And before you could say Jack Robinson, the bird flew away. I'll catch a plane and be there quicker than you can say Jack Robinson.See also: before, can, jack, Robinson, say

before you can say Jack Robinson

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). See also: before, can, jack, Robinson, say

before you can say Jack Robinson

very quickly or suddenly. informal This expression was in use in the late 18th century, but neither an early 19th-century popular song about Jack Robinson nor some mid 19th-century attempts to identify the eponymous Jack Robinson shed any light on its origins.See also: before, can, jack, Robinson, say

before you can say Jack ˈRobinson

(old-fashioned) very quickly or suddenly: I’ll do that for you. I’ll have it finished before you can say Jack Robinson.See also: before, can, jack, Robinson, say

before you can say Jack Robinson

At once, instantly. No one seems to be able to trace this term precisely or to discover the identity of Jack Robinson. Its earliest documented use was in 1778 in Fanny Burney’s Evelina (“I’d do it as soon as say Jack Robinson”). It appears in Dickens’s A Christmas Carol and Twain’s Huckleberry Finn. According to Francis Grose’s Classical Dictionary (1785), the original Jack Robinson was a gentleman who called on his neighbors so peremptorily that there was hardly time to announce him before he was gone. See also: before, can, jack, Robinson, say