You've got to be absolutely clear in this; we've got to be doubly careful.
With her unexpected mass popularity, she has become doubly careful not to make a false move.
"We'll have to be doubly careful from now on."
They weren't expecting Need - now they'll be doubly careful.
So you'll have to be doubly careful not to get caught, won't you?
Well - he could go back to the conference now, but he would have to be doubly careful from now on.
With street crime a way of life in Nairobi, you should be doubly careful with your money.
If he had taken over the search himself I had to be doubly careful.
Tori knew they had to be doubly careful.
He was doubly careful when he picked her foot back up and replaced it on his thigh.