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seal the deal

American  
[seel thuh deel] / ˈsil ðə ˈdil /
Also close the deal

idiom

  1. to complete or successfully negotiate an agreement.

    If our top executive can't seal the deal, no one can.

  2. to secure or ensure a successful conclusion: A last-minute goal sealed the deal for Baltimore.

    He had aced both interviews, and if the director liked him that would seal the deal.

    A last-minute goal sealed the deal for Baltimore.


Etymology

Origin of seal the deal

First recorded in 1950–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If it wasn’t already clear that Odenkirk isn’t your conventional action star, his new film “Normal” should seal the deal.

From Los Angeles Times • Apr. 15, 2026

Racing with more caution early on she started motoring in the second half to seal the deal with ease.

From Barron's • Jan. 25, 2026

That the film contains one of the year’s finest performances may seal the deal for more serious viewers.

From Los Angeles Times • Dec. 12, 2025

She and husband Chris were the first people to view the property in July after travelling 130 miles from their home in Tamworth, Staffordshire, to seal the deal within 48 hours.

From BBC • Nov. 22, 2025

“I had no problem spotting the Butterfly, but I couldn’t seal the deal in time. I forgot about the alternate theater entrance, and I was late getting the jump on the Butterfly because of it.”

From "Glitch" by Laura Martin

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