Words similar to underground

Example sentences for: underground

How can you use “underground” in a sentence? Here are some example sentences to help you improve your vocabulary:

But of course Bye Bye Birdie was the product of an era when America's way of dealing with teen-agers was to encase them in glass-lined steel canisters, truck them to Nevada, and bury them several miles underground in abandoned salt mines.
King Alfonso XIII, who linked the 19th and 20th centuries, inaugurated the Madrid Metro (underground railway) and University City.
The German word for gremlin is Kobold , an underground sprite believed to put curses on ore.
The '60s also saw the invention of art rock , which ranged from the minimalism of the Velvet Underground to the florid romanticism of Yes.
After that, though, the collection's fame returned underground.