Pandora's Box
idiom / noun /pænˈdɔːr.əz bɒks/ — A source of unforeseen and cascading troubles once opened
Definition
A process, action, or decision that, once begun, releases a cascade of problems that cannot be contained or reversed. To open Pandora's box is to release consequences you cannot take back — and to find hope only at the very bottom.
Beyond the definition
Pandora's box is the moment you realise what you've started cannot be stopped. The particular terror is irreversibility — and the strange, necessary consolation: at the bottom of the box, hope remains.
Origin & history
Greek mythology: Pandora was given a jar (mistranslated as 'box') containing all the world's evils. Warned not to open it, she eventually succumbed to curiosity. All evils escaped; only Hope remained inside.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The investigation opened a Pandora's box of accusations that engulfed the entire industry.
Some questions are Pandora's boxes — you cannot unknow what you find.
She asked one question. Pandora's box. Three months of consequences.
How to use it
Follow this entry’s examples for grammatical form and sentence placement.
Choose “Pandora's Box” when the meaning fits your context: A process, action, or decision that, once begun, releases a cascade of problems that cannot be contained or reversed. To open Pandora's box is to release consequences you cannot take back — and to find hope only at the very bottom.
Synonyms
can of worms, trigger, cascade of problems, irreversible catalyst
Antonyms
contained situation, simple problem, easy fix
Related words
Pandora's Box vs mistake
A mistake is an error in judgment. 'Pandora's box' refers specifically to an action that releases a series of unforeseen and uncontrollable future problems.
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Irreversible Consequences Begin
An adult stands before a towering stone-walled maze while an imposing dark guardian figure watches from the entrance.
Opening Pandora's box represents initiating a process with inevitable, uncontainable consequences. The maze serves as an allegory for the complex, inescapable trial that follows once the threshold is crossed.
Image credit: Wordspun · AI-generated conceptual illustration
Questions about this word
What does "Pandora's Box" mean?
Pandora's Box is idiom / noun meaning: A source of unforeseen and cascading troubles once opened. A process, action, or decision that, once begun, releases a cascade of problems that cannot be contained or reversed. To open Pandora's box is to release consequences you cannot take back — and to find hope only at the very bottom.
Where does the word "Pandora's Box" come from?
Greek mythology: Pandora was given a jar (mistranslated as 'box') containing all the world's evils. Warned not to open it, she eventually succumbed to curiosity. All evils escaped; only Hope remained inside.