A Bird In The Hand Is Worth Two In The Bush: 
Having something that is certain is much better than taking a risk for more, because chances are you might lose everything.

A Blessing In Disguise: 
Something good that isn't recognized at first. 

A Chip On Your Shoulder: 
Being upset for something that happened in the past. 

A Dime A Dozen: 
Anything that is common and easy to get.

A Doubting Thomas: 
A skeptic who needs physical or personal evidence in order to believe something.

A Drop in the Bucket: 
A very small part of something big or whole.

A Fool And His Money Are Easily Parted: 
It's easy for a foolish person to lose his/her money. 

A House Divided Against Itself Cannot Stand: 
Everyone involved must unify and function together or it will not work out. 

A Leopard Can't Change His Spots: 
You cannot change who you are.

A Penny Saved Is A Penny Earned: 
By not spending money, you are saving money (little by little).

A Picture Paints a Thousand Words: 
A visual presentation is far more descriptive than words.

A Piece of Cake: 
A task that can be accomplished very easily.

A Slap on the Wrist: 
A very mild punishment.

A Taste Of Your Own Medicine: 
When you are mistreated the same way you mistreat others.

A Toss-Up: 
A result that is still unclear and can go either way.

Actions Speak Louder Than Words: 
It's better to actually do something than just talk about it.

Add Fuel To The Fire: 
Whenever something is done to make a bad situation even worse than it is.

Against The Clock: 
Rushed and short on time.

All Bark And No Bite: 
When someone is threatening and/or aggressive but not willing to engage in a fight.

All Greek to me: 
Meaningless and incomprehensible like someone who cannot read, speak, or understand any of the Greek language would be.

All In The Same Boat: 
When everyone is facing the same challenges.

An Arm And A Leg: 
Very expensive. A large amount of money.

An Axe To Grind: 
To have a dispute with someone.

Apple of My Eye: 
Someone who is cherished above all others.

As High As A Kite: 
Anything that is high up in the sky.

At The Drop Of A Hat: 
Willing to do something immediately.


B

Back Seat Driver: 
People who criticize from the sidelines, much like someone giving unwanted advice from the back seat of a vehicle to the driver.

Back To Square One: 
Having to start all over again.

Back To The Drawing Board: 
When an attempt fails and it's time to start all over.

Baker's Dozen: 
Thirteen.

Barking Up The Wrong Tree: 
A mistake made in something you are trying to achieve.

Beat A Dead Horse: 
To force an issue that has already ended.

Beating Around The Bush: 
Avoiding the main topic. Not speaking directly about the issue.

Bend Over Backwards: 
Do whatever it takes to help. Willing to do anything.

Between A Rock And A Hard Place: 
Stuck between two very bad options.

Bite Off More Than You Can Chew: 
To take on a task that is way to big.

Bite Your Tongue: 
To avoid talking.

Blood Is Thicker Than Water: 
The family bond is closer than anything else.

Blue Moon: 
A rare event or occurance. 

Break A Leg: 
A superstitious way to say 'good luck' without saying 'good luck', but rather the opposite.

Buy A Lemon: 
To purchase a vehicle that constantly gives problems or stops running after you drive it away.



C

Can't Cut The Mustard : 
Someone who isn't adequate enough to compete or participate.

Cast Iron Stomach: 
Someone who has no problems, complications or ill effects with eating anything or drinking anything.

Charley Horse: 
Stiffness in the leg / A leg cramp. 

Chew someone out: 
Verbally scold someone.

Chip on his Shoulder: 
Angry today about something that occured in the past.

Chow Down: 
To eat.

Close but no Cigar: 
To be very near and almost accomplish a goal, but fall short. 

Cock and Bull Story: 
An unbelievable tale.

Come Hell Or High Water: 
Any difficult situation or obstacle.

Crack Someone Up: 
To make someone laugh.

Cross Your Fingers: 
To hope that something happens the way you want it to.

Cry Over Spilt Milk: 
When you complain about a loss from the past.

Cry Wolf: 
Intentionally raise a false alarm.

Cup Of Joe: 
A cup of coffee.

Curiosity Killed The Cat: 
Being Inquisitive can lead you into a dangerous situation.

Cut to the Chase: 
Leave out all the unnecessary details and just get to the point.