It's a piece of cake
It's easy
It's raining cats and dogs
It's raining hard
Let the cat out of the bag
Give away a secret
Look before you leap
Take only calculated risks
On thin ice
On probation. If you make another mistake, there will be trouble.
Once in a blue moon
Rarely
Put something on ice
Put a project on hold
Rain on someone's parade
To spoil something
Saving for a rainy day
Saving money for later
Spill the beans
Give away a secret
Take a rain check
Postpone a plan
The ball is in your court
It's your decision
Take it with a grain of salt
Don’t take it too seriously
The best thing since sliced bread
A really good invention
There are other fish in the sea
It's OK to miss this opportunity. Others will arise.
Throw caution to the wind
Take a risk
