“Fair game”

“Save face”

To avoid embarrassment or loss of respect.

“Tighten your belt”

To spend less money than before.

“Touch base”

To make brief contact or communicate with someone.

“Under your nose”

Very close and easy to see, though unnoticed.

“Smell a rat”

To suspect that something is wrong or dishonest.

“Fair and square”

Honestly and according to the rules.

“Out of your depth”

In a situation that is too difficult for your knowledge or ability.

“Make waves”

To cause attention, change, or trouble.