double-cross

double-edged sword

doubled over the last year

to doubt

I doubt that

to be in doubt

to be in doubt about something

no doubt

I doubt if this shop will ever pay its way

No doubt about that!

A doubt still lurked in his mind

No doubt he is a man-of-consequence

Doubt is the beginning not the end of wisdom

I doubt that the game will ever catch on with elder people

Doubts began to creep into my mind

dough

to dovetail dates

It dovetails nicely

To be down on one’s uppers

to go down with all flags flying

to go down fighting

to go down

to go down a bomb

to go down as something

to go down in price