Tonguebind

You attempt to bind an accuser's tongue.  One creature that you can see must make a Wisdom saving throw.  It automatically succeeds its saving throw if it is immune to being charmed or if you are fighting it.  If the creature fails its save against this spell, you can choose to apply 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 name (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 the 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 Ba Sing Se.")

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 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 your previous casting of the spell end prematurely for that creature.

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