3
pole(noun, beam, shaft, rod)
3
scrabble
3
shovel(verb, cut, turn, produce, clean)
3
sink(verb, ruin, destroy, spoil, wreck)
3
spade(verb, turn, produce, clean, discover)
3
stick(noun, opening, shaft)
3
trench
3
way
2
access
2
aperture
2
aqueduct
2
arroyo
2
avenue
2
bar(noun, beam, shaft, rod)
2
connection
2
couch(noun, hole, warren)
2
course
2
covert
2
crawlway(noun, channel, passageway)
2
deepen(verb, turn, produce, clean, discover)
11 years ago|7.1k views|share |citing 
APASmart Define. (2015). tunnel thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/tunnel/thesaurus/synonyms
ChicagoSmart Define. 2015. "tunnel thesaurus" https://smartdefine.org/tunnel/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, tunnel thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/tunnel/thesaurus/synonyms>.
MLASmart Define. "tunnel thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/tunnel/thesaurus/synonyms>