As for her concerns about Nicolo - they'd proven groundless.

He said that where allegations of illegal activity prove groundless, money will be returned.

Worry that a strike might spread to all black laborers in the country proves groundless.

My concerns, at least for this fight, proved groundless.

Why should some stranger have come here to investigate a case that had been proven groundless?

It was a case that, in the end, proved groundless, to the embarrassment of the Pentagon.

But at least his main fear - that the walls would drive him too close to the edge of the water - proved groundless.

Apparently, one of his fears had been proved groundless.

That old legend of a treasure was proved groundless a long time ago, boys.

His fears that there would be some kind of awkwardness were proved groundless.