Sentence examples for a covert basis from inspiring English sources

The Obama administration reluctantly adopted that policy on a covert basis in June after it concluded that Syrian forces had used chemical weapons on a smaller scale in previous attacks.

That law, all but unused in the intervening decades, is today the basis for a grand jury investigation into the disclosure last year of the identity of Valerie Plame as a covert agent for the Central Intelligence Agency.

Not a covert touch.

(He is not a covert operative).

Act like a covert revolutionary.

What's a covert channel?

How about a covert wedding?

"It was kind of a covert op.

It was an attempt at a covert operation.

"HIV is a covert issue, it is very hidden.

But in fact they acted as a covert hit squad.