Choose the perfect synonym or antonym for the word A long passage that is usually built to go under the ground or through a mountain for traffic to travel through.
Tunnel
/ˈtʌnl/Synonyms:
Antonyms:
Examples:
Making their way to the tunnels.
He looked along the railway line towards the tunnel.
It flowed through a low tunnel of green plants.
Etymology:
The word tunnel traces back to the mid-15th century, derived from Middle English tonnel, meaning barrel or funnel, taken from Old French tonnelle, a diminutive of tonne, meaning tun or cask.
Usage Statistics:
20 mentions per 1 million words 
Hint: Frequency according to COCA
Often
Hint: Frequency according to COCA
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