Tonguebind

You attempt to bind an accuser's tongue.

Choose a creature that you can see within range - the target must make a Wisdom saving throw. If the target is immune to being Charmed, or if you are fighting the target, it automatically succeeds. On a failure, choose one of the following effects:

Word Ban. You can forbid the creature from communicating a particular word (such as "Help"), and all of its synonyms ("Aid", "Assist", "Protect", etc.) The chosen word can be a proper noun (such as the creature's own name), a common noun (such as "city" or "fire"), or a verb (such as "fight" or "beg").

Fact Ban. You can forbid a creature from communicating one fact that it knows (such as "the vizier is plotting to assassinate the king!" or "There is an ongoing war in the kingdom of stones.")

For the duration, the creature cannot communicate the banned word or fact in any way, shape, or form. It cannot speak it, write it, gesticulate it, perform it or communicate it via telepathy or through the use of any spell or other magical effect. If you cast the spell again and target the same creature, all effects from the previous casting end for that creature.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you can increase the spell's duration to 7 days (4th or 5th level), 30 days (6th or 7th level), 1 year (8th level), or make the effects of the spell permanent until dispelled (9th level).