Hush-hush

Don’t mention that the girl is adopted; her family is very hush-hush about it.

Try to keep it hush-hush.

The spy program was very hush-hush: no-one ever spoke of it.

The sex lottery went over big in its first try with number runners selling tickets and making the entire affair a very hush-hush production.

I find a very definite policy of hush-hush here about what Japan is doing […]