as in to block
to prevent passage through by filling with something
clear the leaves out of the rain gutters so they don't stop up the downspouts again
Synonyms & Similar Words
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Example Sentences
Recent Examples of Synonyms for stop (up)
Verb
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In March, the administration filed a new lawsuit again trying to block California’s ability to set stricter-than-federal emissions standards for cars.
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Rodríguez denied those claims, saying some remote areas were difficult to reach because roads were blocked by landslides and debris, forcing authorities to rely on motorcycles, drones and satellite imagery.
Verb
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Some patients develop spasms of the vocal cords that obstruct the airway.
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Don't tail large vehicles closely - Trucks or buses can kick up a water spray that obstructs visibility.
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“Stop (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/stop%20%28up%29. Accessed 5 Jul. 2026.
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