“Nail down”

“An old hand”

A person with a lot of experience in something.

“Move the goalposts”

To change the rules or requirements unfairly.

“As clear as mud”

Very confusing or not clear at all.

“Boil down to”

To have something as the main point or reason.

“Across the board”

Affecting everyone or everything.

“Down the road”

In the future.

“Above board”

Honest, legal, and open.

“Against the clock”

In a hurry to finish something before a deadline.