Irse de la lengua

to let something slip; **to let something slip**; **to spill the beans**; **to blurt something out**; **to let the cat out of the bag**; **to reveal a secret accidentally**

Irse de la lengua means to let a secret slip, accidentally reveal confidential information or speak more than one should.

The expression usually implies that the disclosure was unintentional.

• reveals a surprise by mistake
• accidentally tells a secret
• says something confidential
• speaks without thinking
• gives away information they were supposed to keep private

The expression comes from the idea that the tongue "escapes" its owner's control.

Instead of remaining silent, it moves on its own and reveals information that should have stayed hidden.

The metaphor highlights a momentary loss of self-control while speaking.

The expression is usually forgiving rather than accusatory.

Someone who se va de la lengua has often made an honest mistake.

If the disclosure is deliberate, Spanish speakers are more likely to use expressions such as:

• contarlo todo
• desvelar el secreto
• irse de la lengua a propósito (if intentional)

Spanish has several expressions involving the tongue:

• Irse de la lengua → to let something slip.
• Morderse la lengua → to stop oneself from speaking.
• Tener la lengua muy larga → to be unable to keep secrets.

Together, they describe different ways in which speech can either escape our control—or be deliberately restrained.

Do not translate the expression literally.

English speakers would never say:

My tongue went away.

Instead, use expressions such as:

• I let it slip.
• He spilled the beans.
• She blurted it out.
• They let the cat out of the bag.

The important idea is accidental disclosure.