kept secret or very confidential
gardé secret ou très confidentiel (garde secret ou tres confidentiel)
"The project is still hush-hush, so don’t mention it."
"Le projet est encore hush-hush, donc ne le mentionnez pas." (Le projet est encore hush-hush, donc ne le mentionnez pas.)
to help someone recover from illness
to divide the work or responsibility among people
a state of peace maintained by following laws
you can achieve anything you want in life
to plan something in detail
to go beyond the usual limits; to innovate boldly