“Get cold feet”

“At a glance”

After a quick look.

“At loggerheads”

In strong disagreement.

“An uphill battle”

A very difficult challenge.

“At all costs”

No matter what happens or how difficult it is.

“Bear fruit”

To produce good results.

“Behind closed doors”

Privately, not in public.

“Bad news travels fast”

People quickly hear about bad events.

“At full tilt”

As fast or strongly as possible.