In Spanish, "shut up" can be said in several ways, depending on the context and level of formality or rudeness. Here are some common expressions:

Common Ways to Say "Shut Up" in Spanish

• Cállate (informal, singular) — This is the most straightforward way to say "shut up" to one person you know well.
• Cállese (formal, singular) — Polite or formal version, used with strangers or elders.
• Cállense (plural) — Used when telling multiple people to be quiet.

Other Expressions

• ¡Silencio! — Means "Silence!" and is a less rude way to ask someone to be quiet.
• ¡Cierra la boca! — Literally "Close your mouth!" and can be a bit harsher.
• ¡Deja de hablar! — "Stop talking!"

Note

Be careful when using these phrases, as "cállate" and similar expressions can be considered rude or offensive depending on tone and context. If you want a polite way to ask someone to be quiet, you can say:

• ¿Podrías guardar silencio, por favor? — "Could you please be quiet?"

Let me know if you want more examples or specific contexts!