What is another word for tunnel?

Need synonyms for tunnel? Here's a list of similar words from our thesaurus that you can use instead.

Noun
An underground passage or hole, especially one that has been manually created
“As they moved into another tunnel, Haddad saw that it opened out into a space that could have been a bunkhouse or a storage supply.”
Noun
An underground hole or space
“She was underground in a tunnel somewhere, the babes in her arms crying because they'd felt the last gasp of their mother.”
Noun
A small cave
Noun
An underground system of tunnels and chambers with recesses for graves, used (in former times) as a cemetery
Noun
Place to cross a river
Noun
An aperture or opening through a surface or barrier
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Noun
A transverse channel under a road or railway for the draining of water
Noun
Rough projection
Verb
To dig a passage or hole (through a barrier)
“There is a finite but small probability that the electron will tunnel its way through the barrier and emerge from the box.”
Verb
To dig or poke about, especially in soil, in search of something
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Verb
Lessen the effectiveness, power, or ability of, especially gradually or insidiously
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