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1. noun, dated slang A white person. A term used primarily by African-American communities in the rural south of the US. Likely derived from "Jefferson Davis," the president of the Confederacy during the US Civil War. I tried applying for a loan, but some jeff at the bank denied my application. I wasn't used to seeing so many jeffs all the time when I went to college.
2. verb, slang To run, then walk, then run, and so on. A technique named after and popularized by Olympic runner Jeff Galloway. I decided to jeff the half-marathon, and I ended up getting a better time than I ever had before. I don't know why people think jeffing a race is any better than running it like normal.

Mutt and Jeff

1. dated slang A nickname given to a pair of people, especially friends or partners, who have distinctly contrasting qualities, especially in height. The name derives from the long-running 1907 US comic strip of the same name. Two detectives arrived at my door, one a towering, lanky beanpole of a man, the other squat and stout, like a bulldog. A regular Mutt and Jeff, they were.
2. dated slang A method of police interrogation in which one of two interrogators behaves in an overtly aggressive and accusatory with a suspect, while the other acts much more supportive and sympathetic. More commonly known as "good cop/bad cop." How do you want to interrogate the suspect? Will we give him a bit of the ol' Mutt and Jeff routine?
3. slang Deaf. The phrase comes from rhyming slang in which "Mutt and Jeff" rhymes with "deaf." Sometimes written as "Mutt 'n' Jeff." Primarily heard in UK. Can you please speak louder? I've gone a bit Mutt and Jeff as I've gotten older. Poor Grandad's quite Mutt 'n' Jeff these days, so he's always got the radio blaring as loud as it'll go.
See also: and, Jeff, mutt

mutton Jeff

slang A variant of "Mutt and Jeff," rhyming slang for "deaf." Primarily heard in UK. Can you please speak louder? I've gone a bit mutton Jeff as I've gotten older. Poor Grandad's quite mutton Jeff these days, so he's always got the radio blaring as loud as it'll go.
See also: Jeff, mutton
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.


1. n. a Caucasian; a white person. (All senses originally black. From Jefferson Davis. Potentially derogatory.) The jeffs are coming around more often. What’s up?
2. n. a boring or square person. Don’t be a jeff, man!
3. tv. to persuade or deceive someone. You’re just jeffing us!
4. in. to gentrify; to take on the ways of whites. Cool it man; stop your jeffing.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
Mr Jeff notifies customers the day before a pickup or delivery to remind them that staff are coming, and will send another message when they are on their way.
Jeff and Julie have finally won their case after a judge ruled in their favour at an immigration tribunal.
Michael Gough and Ahsan Raza (on-field umpires), Kumar Dharmasena (third umpire), Shozab Raza (fourth umpire), Jeff Crowe (match referee).
Generally drawing or painting his heroes from TV, film or comics, Jeff would sometimes send sketches to the stars to be signed.
During deployments, Frank provided needed comfort, stability and relief to Jeff and his teammates between ops.
"One of the best things about Jeff is his temperment and how content he is.
And an actor has been assigned to the eventful part of Dawn, who launched the Jeff Astle Foundation to push for research into heading footballs and the onset of brain disease.
Each Jeff Cooper Designs piece is handmade to order.
Jeff joins Donald Sutherland on the run as San Francisco starts to resemble a BHOTOX users' convention.
SKY Sports presenter Jeff Stelling was cheered as he strode up to the Riverside Stadium on his epic Men United March to Wembley.
Her son Jeff 's care package had been cut in half following Duncan Smith's decision to close down the Fund.
She was born in Long Island, as Jeff Smith, to a Conservative Jewish family.
Tony Jeff will probably be the one hearing the claim.
Dad Darius, who measures 4ft 4in from nose to tail and weighs three-and-a half-stone, is eight inches longer than his bouncing baby Jeff.