Feel blue
To feel sad or depressed.
The elephant in the room
An obvious problem people avoid talking about.
Piece of cake
Something very easy to do.
Break a leg
A way to wish someone good luck.
Under the weather
To feel sick or unwell.
Green with envy
To be very jealous of someone.
Let the cat out of the bag
To reveal a secret accidentally.
Spill the beans
To reveal secret information.
Cost an arm and a leg
To be extremely expensive.
A storm in a teacup
A small problem that is exaggerated.
In the red
To owe money; to be in debt.
The lion’s share
The largest or best portion of something.
Butter someone up
To flatter someone to gain a favor.
Keep an eye on something
To watch or monitor something carefully.
When it rains, it pours
When many bad things happen at the same time.
Caught red-handed
To be caught while doing something wrong.
A wild goose chase
A hopeless or pointless search.
Sell like hotcakes
To be bought quickly and in large numbers.
Get cold feet
To suddenly feel nervous and hesitate about a plan.
Take a rain check
To politely refuse or postpone an offer.
A grey area
Something unclear, not clearly defined, or hard to classify.
Kill two birds with one stone
To achieve two things with a single action.
Take something with a grain of salt
To not fully believe something; to be skeptical.
Put your foot in your mouth
To say something embarrassing or inappropriate.
Break the ice
To start a conversation or make people feel more comfortable.