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Synonyms

underpass

American  
[uhn-der-pas, -pahs] / ˈʌn dərˌpæs, -ˌpɑs /

noun

  1. a passage running underneath, especially a passage for pedestrians or vehicles, or both, crossing under a railroad, road, etc.


underpass British  
/ ˈʌndəˌpɑːs /

noun

  1. a section of a road that passes under another road, railway line, etc

  2. another word for subway

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of underpass

First recorded in 1900–05; under- + pass

Vocabulary lists containing underpass

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.

On the morning of 6 April 2009, a lorry driver pulled off the M4 and parked in an underpass near Porthcawl, south Wales, and spotted a suitcase in an embankment.

From BBC • Feb. 7, 2026

Videos circulating on social media showed police vans escorting a bar association vehicle carrying Mazari to court before it was stopped at an underpass, where masked security officials prevented journalists from filming the arrest.

From Barron's • Jan. 24, 2026

Mud and debris fell onto West Mountain Drive and Cliff Drive at La Marina, and flooding forced the closure of the Mission Street underpass and the 101 freeway off-ramps, he said.

From Los Angeles Times • Nov. 17, 2025

Two months later, signs appeared stating rowing through another nearby underpass prone to flooding was prohibited.

From BBC • Oct. 9, 2025

The underpass is dark, but I feel as though I can see someone in there, in the shadow's—someone watching us go.

From "The Girl on the Train" by Paula Hawkins

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