Gray area
something that is unclear, undefined
Ahead of the curve
does a good job predicting trends, keeping up with current methods, and leading
A blast from the past
Something you remember from the past that you see, hear or experience again
Break the ice
to get the conversation going. Provide a conversation prompt
Get out of hand
When a situation gets out of control
Green with envy
to be very jealous, envious
Not going to fly
refers to something that won’t be effective, permissible, or well received
That ship has sailed
When an opportunity has been missed
Give the cold shoulder
Ignoring someone or making it clear that they aren’t welcome.
Your guess is as good as mine
I don't know either
Out of the blue
randomly, without warning, surprisingly
Hit the nail on the head
to do something with precision or say exactly the right thing
History in the making
something that is happening now is notable enough that people in the future will remember it.
A dime a dozen
Very common: quite ordinary
Buy it
To believe something
Green thumb
to be skilled at gardening
On the back burner
pausing work on one project or task so you can focus on another, more urgent one
heard something through the grapevine
to hear news from someone who heard the news from someone else
Leave out in the cold
To be ignored or not considered
Spill the beans
To tell a secret
Caught red-handed
to catch someone in the act of doing something
Cut the mustard
it means to meet expectations or reach the required standard
An arm and a leg
A large expense or amount of money
Once in a blue moon
Very rare
Straight from the horse's mouth
To hear information directly from the person involved