let (something) slip

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let (something) slip

To accidentally or inadvertently reveal some secret or important piece of information. I can't believe your sister let news of our engagement slip in front of your parents! The agent, under the influence of a powerful truth serum, let slip the names of other operatives working covertly in the area.
See also: let, slip

let it slip

To accidentally or inadvertently reveal a given secret or important piece of information. We had done so well keeping our engagement a secret. I can't believe I let it slip in the middle of dinner last night!
See also: let, slip
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

let something slip (out)

Fig. to reveal a secret carelessly or by accident. I didn't let it slip out on purpose. It was an accident. John let the plans slip when he was talking to Bill.
See also: let, slip
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

let slip

1. Also, let slip or slide by ; let slide. Miss an opportunity; waste time. For example, We forgot to buy a ticket and let our big chance slip by, or He let the whole day slide by. The first term dates from the mid-1500s, the variant from the late 1500s.
2. Also, let slip out. Reveal something, usually inadvertently, as in He let it slip out that he had applied for the vacant position. [Mid-1800s]
3. let slip through one's fingers. Fail to seize an opportunity, as in We could have won the trophy but we let it slip through our fingers. [First half of 1600s]
See also: let, slip
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

let something slip

1 reveal something inadvertently in the course of a conversation. 2 fail to take advantage of an opportunity.
See also: let, slip, something
Farlex Partner Idioms Dictionary © Farlex 2017

let ˈslip something

give somebody information that is supposed to be secret: She tried not to let slip what she knew.I happened to let it slip that he had given me $2 000 for the car.
See also: let, slip, something
Farlex Partner Idioms Dictionary © Farlex 2017

let slip

To say inadvertently.
See also: let, slip
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
They beat Barwell 2-0, drew 0-0 with Market Drayton, defeated Biddolph 1-0 before letting slip a last minute goal in the 1-1 draw with Rocester.
World Touring Car champion Andy Priaulx was left to curse another difficult afternoon in Valencia yesyterday after letting slip his lead in the title race.
But BGT judge Alesha Dixon stuck the knife into her old bosses yesterday by letting slip on Lorraine Live the latest series is going to start on the same day.
MOTORSPORT: Defending World Touring Car champion Andy Priaulx was left to curse another difficult afternoon in Valencia after letting slip his lead in the title race.
Both shot 69 for a total of 202 but Goosen was kicking himself after letting slip a three-shot lead.
All the fuss that's been caused has been far better for my career." Danielle was also in trouble after letting slip she was in a relationship with judge West Ham's Teddy Sheringham, 40.