through the roof
idiomC

To be very high or to increase a lot
  • 1The price of gas has gone through the roof this year.
  • 2His excitement went through the roof when he heard the news.
When something is through the roof, it means it is extremely high or has increased a lot. For example, if the price of something goes through the roof, it means it has gone up by a large amount. It's like reaching the top of a building.
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Remember that "through the roof" is often used in informal situations to emphasize just how high or extreme something is. It's a colorful way to describe a significant increase, so use it for emphasis!
during a job interview
Surprising Salary Expectations
Kimberly
I heard the cost of living in this city has gone through the roof.
Steven
Yes, that's why we're offering competitive salaries.
Kimberly
That's good to hear, especially with rent prices skyrocketing.
Steven
Absolutely, we want to ensure our employees are comfortable.
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Similar to "through the roof":
  • 1skyrocket
  • 2soar