But being a woman she concealed her knowledge of that fact.

For example, you concealed your prior knowledge of Tewfiq's and Wasfi's cover occupations.

So we concealed our knowledge of these matters; and we soon learned to control our learning too.

It was not your place to conceal your knowledge of his identity.

Why had he concealed her knowledge of smuggling?

The Actors are highly trained to conceal their knowledge.

Because of this they concealed their knowledge not only to the public but also to his wife and family.

She conceals her knowledge from the police on the condition that Donna leave Eric.

He conceals his knowledge of the deed for more than a decade - and pays a terrible price for doing so.

"But at least he had the tact to conceal his knowledge until the secret was out."