Tunneling
Underpass and tunneling are semantically related. in covered passageway topic. In some cases you can use "Underpass" instead a noun "Tunneling".
Underpass
Underpass noun - An underground tunnel or passage enabling pedestrians to cross a road or railway.
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Synonyms for Underpass
Mutual synonyms
Cite this Source
Underpass and Tunneling. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/tunneling/underpass
Tunneling & Underpass. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/tunneling/underpass>.
Underpass or Tunneling. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/tunneling/underpass.
Google Ngram Viewer shows how "tunneling" and "underpass" have occurred on timeline