Evidence status: UNKNOWN

If someone reveals a secret, we say they have “spilled the beans”. The internet has a wonderfully neat explanation involving secret ballots in ancient Greece.

Unfortunately, neat is not the same thing as true.

The Short Answer

“Spill the beans” appears to be an American expression from the early twentieth century. Its first documented uses meant something closer to upsetting or spoiling a situation; the modern meaning of revealing secret information developed soon afterwards.

Nobody knows with confidence why the objects being spilled became beans.

The popular claim that the expression comes directly from ancient Greeks voting with coloured beans has no documented linguistic trail connecting that practice to the modern phrase.

What We Know

The word spill had been used figuratively for centuries before the beans arrived.

Phrase Finder identifies a sixteenth-century example in which “spill” already carries the sense of letting something out or divulging it.

“Spill the beans” itself appears much later.

An American newspaper example from 1908 uses it in politics, where the meaning is essentially to wreck or upset somebody's plans.

A 1911 example moves closer to the modern sense by describing someone speaking out and thereby disrupting a situation. By 1919, Merriam-Webster's historical evidence records the expression with the recognisable sense of divulging information.

So rather than arriving fully formed, the expression appears to have evolved:

upset something → upset something by talking → reveal something that should have remained secret.

How It Became a Habit

Once “spill” already meant letting information out, adding something physical gave the metaphor an image.

Beans are contained.

Secrets are contained.

Once either is spilled, putting everything neatly back where it was becomes difficult.

Whether that was the conscious logic of whoever coined it, however, is unknown.

The Story Everyone Tells

The famous explanation transports us to ancient Greece.

Citizens supposedly voted by placing differently coloured beans into containers. One colour represented a positive vote and another a negative one.

If someone knocked over the container before the count was finished, the beans would reveal the secret result.

They had literally spilled the beans.

It's an almost suspiciously perfect origin story.

What the Evidence Actually Says

Ancient societies really did use beans, stones and other small objects in voting and selection procedures.

What is missing is the important part:

evidence that this created the English expression.

There is no linguistic bridge across the roughly two-thousand-year gap.

Oxford etymologist Anatoly Liberman wrote in 2024 that despite investigating the expression, its source remains unknown.

The American printed record around 1900 is therefore much more useful than the Greek story.

The verdict:

FOLKLORE: Ancient bean voting existed.

UNKNOWN: There is no persuasive evidence that it produced “spill the beans”.

Why It Stuck

Because spilling is almost irreversible.

Once the beans are across the floor, they are out.

Once the secret is spoken, exactly the same thing has happened.

You can gather the beans again.

You cannot make everyone forget what they heard.

Related Curiosities

Sources & Further Reading

  • Oxford University Press / Anatoly Liberman — why the true origin remains unresolved.
  • Phrase Finder — 1908 and 1911 American examples.
  • Merriam-Webster editors — early twentieth-century development of the phrase.

Last checked: 19 September 2026