A very short amount of time; a moment or instant.
Origin uncertain, but possibly from the 18th-century slang 'jiff' or related to the word 'gyve' (a shackle). It became popular in American English in the late 1800s and remains informal.
You can buy 'Jiffy' peanut butter and cornbread mix, but did you know the brand is named after the catchphrase 'in a jiffy,' meaning quick convenience food was ready in just a moment?
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