Avoiding the main topic. Not speaking directly about the issue.
Beat around the bush.
You are not very good at something. You could definitely not do it professionally.
Don't give up the day job.
This idiom means, to accomplish two different things at the same time.
Kill two birds with one stone.
Be optimistic, even difficult times will lead to better days.
Every cloud has a silver lining.
This idiom is used to express "Don't make plans for something that might not happen".
Don't count your chickens before the eggs have hatched.
Everything. All of it.
Whole nine yards.
Crazy, demented, out of one's mind, in a confused or befuddled state of mind, senile.
Off one's rocker.
An assertion that, despite one's approach seeming random, there actually is structure to it.
Method to my madness.
This expression is used when the person you have just been talking about arrives.
Speak of the devil!
To take the credit for something someone else did.
Steal someone's thunder.
The final problem in a series of problems.
Last straw.
A visual presentation is far more descriptive than words.
Picture paints a thousand words.
This is used when someone does not want to choose or make a decision.
Sit on the fence.
This idiom means 'to hear rumors' about something or someone.
Hear it on the grapevine.
Join a popular trend or activity.
Jump on the bandwagon
This idiom is used to say that two (or more people) agree on something.
See eye to eye.
Overwhelmed by what is happening in the moment.
In the heat of the moment.
Looking in the wrong place. Accusing the wrong person.
Barking up the wrong tree.
The show has come to an end. It's all over.
Elvis has left the building.
This means not to take what someone says too seriously.
Take with a grain of salt.
A job, task or other activity that is easy or simple.
Piece of cake.
Would never like to do something.
Wouldn't be caught dead.
To work late into the night, alluding to the time before electric lighting.
Burn the midnight oil.
Come to the point - leave out details.
Make a long story short.
Someone who lacks intelligence.
Not playing with a full deck.
Deal with a problem if and when it becomes necessary, not before.
Cross that bridge when you come to it.
A way of asking what someone is thinking.
A penny for your thoughts.
When something is done badly to save money.
Cut corners.
Actions or communications need more than one person.
It takes two to tango.
Meaning: Feeling slightly ill.
Feel a bit under the weather.
Meaning: All the advantages.
Best of both worlds.
To present a counter argument.
Devil's Advocate.
Meaning - do not disturb a situation as it is - since it would result in trouble or complications.
Let sleeping dogs lie.
Meaning: without any hesitation; instantly.
At the drop of a hat.
To further a loss with mockery or indignity; to worsen an unfavorable situation.
Add insult to injury.
This means to deceive someone into thinking well of them.
Put wool over other people's eyes.
When someone finds it difficult to choose between two alternatives.
Caught between two stools.
Being Inquisitive can lead you into an unpleasant situation.
Curiosity killed the cat.
Means that something happens to you, or is done to you, that you have done to someone else.
Taste of your own medicine.
When you are extremely desperate you need to take drastic actions.
Drastic times call for drastic measures.
When someone understands the situation well.
On the ball.
To take on a task that is way to big.
Bite off more than you can chew.
Do or say something exactly right.
Hit the nail on the head.
Believe someone's statement, without proof.
Give the benefit of the doubt.
Cannot judge something primarily on appearance.
Can't judge a book by its cover.
To succeed; to come up to expectations; adequate enough to compete or participate.
Cut the mustard [possibly derived from "cut the muster"]
People's intentions can be judged better by what they do than what they say.
Actions speak louder than words.
Keep something away.
Keep something at bay
To share information that was previously concealed.
Let the cat out of the bag.
Very different from.
Far cry from.
This idiom is used to say that someone missed his or her chance.
Miss the boat.
To have no idea, do not know the answer to a question.
Your guess is as good as mine.
A good invention or innovation. A good idea or plan.
Best thing since sliced bread.
This idiom is used when something is very expensive.
Costs an arm and a leg.
Meaning: Happens very rarely.
Once in a blue moon.
To go to bed.
Hit the sack / sheets / hay
Something good that isn't recognized at first.
Blessing in disguise.
When you complain about a loss from the past.
Cry over spilt milk.
Speak of an issue (mostly current) which many people are talking about and which is usually disputed
A hot potato
When an attempt fails and it's time to start all over.
Back to the drawing board.
Be happy when a person leaves.
Be glad to see the back of.
Do not put all your resources in one possibility.
Don't put all your eggs in one basket.
It is up to you to make the next decision or step.
Ball is in your court.