The band was forced underground until the Velvet Revolution in 1989.

If 30 atomic bombs were exploded in 30 days, our Earth population would be forced underground by the extreme cold.

They were forced underground, and eventually disbanded, in the face of legislation and pressure from the authorities.

They were forced underground by the coming of the more powerful species.

Illegal immigrants were forced underground by a new law that created sanctions on employers who hired them.

He could only imagine what traits and abilities might have emerged had they not been forced underground.

However, it was forced underground by the British, who refused to let these German allies operate.

Its leaders were sent into exile and the group itself was forced underground.

Forced underground, the opposition had become more revolutionary.

Rushdie returned to public life in 1999, a decade after being forced underground by Khomeini's declaration.