“Burn the midnight oil”

“Costs an arm and a leg”

Very expensive.

“Once in a blue moon”

Very rarely.

“Bite off more than you can chew”

To take on too much responsibility.

“Cut corners”

To do something cheaply or badly to save time or money.

“A dime a dozen”

Very common and easy to find; not special or valuable.

“Kill two birds with one stone”

To achieve two goals with one action.

“Time flies”

Time passes very quickly.

“A picture is worth a thousand words”

An image can express more than words.

“Take it with a grain of salt”

To not completely believe something.

“Back against the wall”

In a very difficult situation with no easy options.

“A blessing in disguise”

Something that seems bad but turns out good.

“Under the weather”

Feeling slightly ill or unwell.

“The best of both worlds”

A situation where you enjoy two different advantages.

“Piece of cake”

Something very easy to do.

“Break a leg”

A way to wish someone good luck.

“Bite the bullet”

To face a difficult or unpleasant situation bravely.

“Get out of hand”

To become uncontrollable.

“Beggars can’t be choosers”

People with no options must accept what they get.

“Actions speak louder than words”

What people do is more important than what they say.

“Better safe than sorry”

It’s better to be cautious than regret later.