Objects
Piece of cake
Something that is very easy to do.
Let the cat out of the bag
reveal a secret
Under the weather
Feeling sick or not well
Cost an arm and a leg
very expensive
Don’t judge a book by its cover
You shouldn’t decide what someone or something is like based only on appearance.
Spill the beans
To reveal a secret or share information that was supposed to stay private.
Hold your horses
wait or slow down
Storm in a teacup
a big reaction to a small problem
Break a leg
Good luck
Hit the nail on the head
To say exactly the right thing or identify the exact problem.
Bite off more than you can chew
To take on more responsibility or work than you can handle.
The elephant in the room
an obvious problem people avoid discussing
Save for a rainy day
save money for future problems
I got cold feet.
suddenly become nervous
Burn the midnight oil
To stay up late working or studying.
Cool as a cucumber
Very calm, even in a stressful situation.
Kill two birds with one stone
accomplish two things at once
On cloud nine
extremely happy
By the skin of your teeth
barely made it
Once in a blue moon
Something that happens very rarely.
Cry over spilled milk
To be upset about something that already happened and cannot be changed.
A dark horse
someone who unexpectedly succeeds
Take a rain check
postpone something