Pandora's box

noun

1. a source of extensive but unforeseen troubles or problems:

   The senate investigation turned out to be a Pandora's box for the administration.

Pandora's box

1. In classical mythology , a box that Zeus gave to Pandora, the first woman, with strict instructions that she not open it. Pandora's curiosity soon got the better of her, and she opened the box. All the evils and miseries of the world flew out to afflict mankind.

Notes

To “open a Pandora's box” is to create an uncontrollable situation that will cause great grief.

Word History and Origins

Origin of Pandora's box¹

First recorded in 1570–80

Idioms and Phrases

A source of unforeseen trouble, as in Revising the tax code is opening a Pandora's box . This equivalent for the modern can of worms comes from the Greek legend in which Pandora, entrusted with a box containing the world's ills, is overcome by curiosity and opens it, thereby releasing them. [Late 1500s]

Example Sentences

Sitting House Speaker Mike Johnson argued against the report's release in a Sunday appearance on Fox News, saying it could "open Pandora's box" if the panel started issuing reports about those who are not members of the body.

From BBC

He told Fox News it was a "Pandora's box" because Putin's isolation would increase the pressure on him.

From BBC

“I think it would open a Pandora’s box. It’s a very important rule that should be maintained. It has been broken once or twice; it should not have been.”

From Salon

Ukrainian President Volodymyr Zelensky said the call was a “Pandora’s box” and argued it weakens Putin's isolation.

From BBC

“In my view there is a grave danger that if you once open Pandora’s Box shutting it will be impossible.”

From BBC