49 Idioms

49  idioms you must know

A hot potato

A contentious problem

A penny for your thoughts

What are you thinking about

Actions speak louder than words

Doing is more important than talking

Add insult to injury

Make things worse

At the drop of a hat

Straight away

Back to the drawing board

Start again from scratch

Ball is in your court

You have to make the next move

Barking up the wrong tree

being mistaken

Be glad to see the back of

To have enough

Beat around the bush

To not go straight to the point

Best of both worlds

Best thing since sliced bread

Bite off more than you can chew

Blessing in disguise

Burn the midnight oil

Can’t judge a book by its cover

Caught between two stools

Costs an arm and a leg

Very expensive

Cross that bridge when you come to it

Deal with a problem only when it confronts you

Cry over split milk

Regret the past 

Curiosity killed the cat

Being too inquisitive can be dangerous

Cut corners

Do not do a job thoroughly

Cut the mustard [possibly derived from “cut the muster”]

Inadequate

Devil’s Advocate

Don’t count your chickens before the eggs have hatched

Don’t give up the day job

Don’t put all your eggs in one basket

Drastic times call for drastic measures

Every cloud has a silver lining

Far cry from

Feel a bit under the weather

Give the benefit of the doubt

Hear it on the grapevine

Hit the nail on the head

Hit the sack / sheets / hay

In the heat of the moment

It takes two to tango

Jump on the bandwagon

Keep something at bay

Kill two birds with one stone

Last straw

Let sleeping dogs lie

Let the cat out of the bag

Make a long story short

Method to my madness

Miss the boat

Not a spark of decency

Not playing with a full deck

Off one’s rocker

Mad

On the ball

Alert

Once in a blue moon

Very rarely

Picture paints a thousand words

An image explains more than a page of script

Piece of cake

Easy

Put wool over other people’s eyes

Stop someone seeing the truth

See eye to eye

To agree

Sit on the fence

Do not take sides

Speak of the devil!

Someone arrives when you are talking about them

Steal someone’s thunder

Take with a grain of salt

Did not take too seriously

Taste of your own medicine

be treated as badly as you treated someone else.

To hear something straight from the horse’s mouth

Get news from the source

Wouldn’t be caught dead

You would never do a certain thing

Your guess is as good as mine

I do not know the answer to the question either