Antonyms for sub-way

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR SUB-WAY

I thought only sub-way guards could say, 'Step lively,' like that.

Against the walls of this sub-way are fixed, readily connectable, gas mains and water mains and telegraph tubes.

Outside the sub-way are ordinary house vaults of two or three storeys high, according to the height of the Viaduct.

But the thing you didn't know, the funny thing, was that all unconsciously you had been through a sub-way under the road.