Synonyms|81Antonyms|0|Broader|1Narrower|0Related|28

22 entries under noun topic. ×

9
tunnel(channel, passageway)
7
subway
4
passage
3
passageway
3
channel
3
conduit
3
metro
3
tube
0
Channel Tunnel
0
Chunnel
0
burrow
0
cylinder
0
duct
0
hole
0
hose
0
hosepipe
0
pipe
0
pipework
0
resistance
0
shaft
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APASmart Define. (2015). underpass thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/underpass/thesaurus/synonyms
ChicagoSmart Define. 2015. "underpass thesaurus" https://smartdefine.org/underpass/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, underpass thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/underpass/thesaurus/synonyms>.
MLASmart Define. "underpass thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/underpass/thesaurus/synonyms>