Bickel continued to stare at the Ox structure, wondering if he had done the right thing to act secretly.

I had to act secretly, Bickel told himself.

Yes, that would be like you, now that you no longer have to act secretly.

Certainly, a military command will act secretly in war, and will protect secrets of its vulnerable capabilities.

Nations that cannot act secretly and speedily may have two strikes against them.

"I had to act quickly and secretly," the sculptor wrote.

Agents secretly acting for him quietly bought up the bonds (about £500,000).

Therefore, I have decided to take direct control rather than act secretly through one of you.

In the time of William Shakespeare, men and boys played women's roles, but we think perhaps women also acted secretly.

Research has shown that Pallache secretly acted as a double agent.