You can use it in a city when you want to get somewhere without problems. It's like a train.
underground
It's a synonym for FAMOUS.
well - known
He is not smiling. He is ____________.
serious
A reporter is making an ______________ now.
interview
Mickey Mouse , Donald Duck, Tom and Jerryand Sleeping Beauty are _____________.
cartoons
It's a very tall building in a big city
skyscraper