How to Say "don't chat" in Spanish
The Spanish word for “don't chat” is “charles” — B1 level.

Examples
No quiero que charles con desconocidos en internet.
I don't want you to chat with strangers on the internet.
¡No charles tanto y termina tu tarea!
Don't chat so much and finish your homework!
Es posible que charles con el director durante la fiesta.
It's possible that you might chat with the director during the party.
The 'E' for 'A' Swap
Since 'charlar' normally ends in 'as' (charlas), we swap the 'a' for an 'e' (charles) to show we are talking about wishes, doubts, or negative commands.
Negative Commands
To tell someone 'Don't chat' in an informal way, you must use this specific form: 'No charles'.
Confusing Charles with Charlas
Mistake: “No charlas conmigo.”
Correction: No charles conmigo (if giving a command) OR No charlas conmigo (if stating a fact). Use 'charles' for commands and 'charlas' for facts.
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