When they finally screwed up their courage and asked to go home, the police refused.

He might have screwed up his courage to kill him.

He took a deep breath, screwed up his courage, and stepped forward.

I've been trying to screw up my courage to tell you.

Then he appeared to be screwing up his courage again.

Screwing up his courage, he told the girl to close the door.

Did you screw up your courage enough to meet me?

I stood across the street, trying to screw up my courage to go in the bar.

I screwed up my courage and began digging out the eyes.

"I have been longing to ask you about it for some time past, but could not quite screw up my courage."