“Cast in stone”

“Big fish in a small pond”

An important person in a small group or limited environment.

“Leave no stone unturned”

To try every possible way to achieve something.

“In full swing”

Happening with full activity and energy.

“In the driver’s seat”

In control of a situation.

“In the heat of the moment”

While feeling strong emotion, without thinking calmly.

“Dead in the water”

Unable to continue or succeed.

“A storm in a teacup”

A lot of anger or worry about something unimportant.

“In a pickle”

In a difficult or troublesome situation.