Morderse la lengua

to bite one's tongue; **to bite one's tongue**; **to hold one's tongue**; **to keep one's mouth shut** (more direct); **to keep quiet**

Morderse la lengua means to deliberately avoid saying something, usually because it would be rude, offensive, embarrassing or likely to cause trouble.

The speaker has something to say but consciously decides to remain silent.

The expression highlights self-control rather than silence itself.

• avoids an argument
• suppresses criticism
• resists correcting another person
• keeps an opinion to themselves
• stops themselves from making an inappropriate comment

The expression comes from a simple physical image.

Biting one's tongue can prevent speech, at least momentarily.

This obvious association between the tongue and spoken words gradually became a metaphor for self-restraint.

The image has survived for centuries because it is both vivid and immediately understandable.

Spanish speakers often value diplomacy over bluntness in everyday relationships.

Saying:

Me mordí la lengua.

usually suggests maturity and self-control rather than weakness.

The expression often carries the implication:

"I had every reason to say something—but wisely chose not to."

Many Spanish idioms involving the tongue refer to speaking:

• No tener pelos en la lengua (to speak bluntly)
• Morderse la lengua (to hold back)
• Irse de la lengua (to let something slip)

Together, they form a fascinating group of expressions showing how closely Spanish links the tongue with honesty, discretion and self-control.

Although English also uses to bite one's tongue, be careful not to assume both expressions are always interchangeable.

Spanish speakers often use morderse la lengua in very ordinary situations where English might simply say:

• I kept quiet.
• I didn't say anything.
• I held back.

Choose the translation that best fits the tone of the conversation.