The spy program was very hush-hush, no one ever spoke of it.
The whole business is hush-hush.
We tried to run him down but he was hush-hush with everyone at World Wide on his new job and where he was going.
The gasp heard around the world sounded when it was revealed Jennifer Lopez and singer Marc Anthony were married in a hush-hush backyard affair.
Louisa Brown, Lesley Browning and Andrew Henderson tell all off the record, on the QT and very hush hush.
The FBI likes to keep our work on these cases very hush-hush.