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

Relevance

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
  • Karla Brustad has put on sing-alongs, strum alongs, hootenannies and all sorts of free community jams, getting folks singing and playing the ukulele.
    Linda Mcintosh, San Diego Union-Tribune, 3 Apr. 2026
  • In the season opener against Lemont, Sokolnicki entered the game with two runners on base and no outs in the top of the seventh inning and worked his way out of the jam with just three pitches.
    Bobby Narang, Chicago Tribune, 3 Apr. 2026

Browse Nearby Words

Cite this Entry

“Jam-up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/jam-up. Accessed 6 Apr. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster