Block words in your Telegram group, free.

Most groups have a few words they never want: an insult that starts fights, a slur, the name of a scam that keeps coming back, a topic the rules ban. Telegram gives groups no word list of their own, so without a bot an admin has to spot each message and delete it by hand, usually after half the group has read it.

A word filter does the dull part. You list the words once, and every message that uses one is gone before the conversation moves on, at 3 a.m. as well as at noon. Paired with clear group rules, members know where the line is and see it held.

Open the Limzo Mini App, pick your group and tap Word filter. Type up to 5 words or short phrases. They are matched as whole words, so “art” never removes a message about a “start”, and a phrase matches only when its words appear together. A message that contains one is deleted, whether it is new, edited later or a caption on a photo or video.

The filter does not depend on the moderation switch, so it runs even with the rest of moderation off. Admins and trusted users are never filtered. Limzo needs the Delete messages right; mute and ban also need Ban users.

On Free, the filter holds up to 5 words and always deletes. That covers the handful of words most groups mean when they ask how to block words.

Pro and Ultra raise the list to 25 and let you choose the action: Delete + warn adds a warning on the same warn ladder as your other rules, Delete + mute mutes the sender for 10 minutes, 1 hour, 1 day or 1 week, and Delete + ban removes them. A mute or ban posts a short notice that clears itself after a minute. Each admin can also turn on a private digest, at most once an hour and only when something matched.

Links and @usernames are a separate list: moderation’s Blocked URL / username terms checks only links, buttons and @usernames, while the Word filter checks the text itself. For spam links, see link removal.