Definition of jam-upnext
as in jam
a crowded mass (as of cars) that impedes or blocks movement knowing that there was a big traffic jam-up ahead, we took the detour that the locals always use

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of jam-up Without enough beds for continuing care outside the hospital, the jam-up ripples back to that ER hallway. Tom Wolzien, MSNBC Newsweek, 29 Mar. 2026
Recent Examples of Synonyms for jam-up
jam
Noun
  • In the background, the soft morning sunlight casts a warm glow, illuminating a spread of orange juice, tea, and a baguette sandwich with butter and jam.
    Kaitlyn McInnis, Forbes.com, 26 June 2026
  • Stick to whole grapes instead of grape juice, raisins, or jams, as these have more sugar and fewer nutritional benefits.
    Vanessa Caceres, Verywell Health, 25 June 2026

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Cite this Entry

“Jam-up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/jam-up. Accessed 28 Jun. 2026.

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