Leigh is said to keep mum about his working methods. |
In other words, keep mum about the war, those responsible for it and its consequences. |
But if I've lost those same 15 pounds because of a terrible flesh-eating virus, I'd rather you keep mum. |
We had been separated from the rest of humanity with solemn and legally binding promises to keep mum. |
There is an incentive to collude with other suppliers to boost prices, just as two prisoners have good reason to keep mum about their crime. |
A good friend can keep mum about your deepest darkest secrets. |