go through the roof

Idioms & Phrases

go through the roof

  1. Also, hit the ceiling or roof. Lose one's temper, become very angry, as in Marge went through the roof when she heard she'd been fired. [Colloquial; first half of 1900s]

  2. Reach new or unexpected heights, as in After the war, food prices went through the roof. [Colloquial; first half of 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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