speakable

adj

1. (not-comparable)That can be spoken; utterable, verbalizable.
2. (not-comparable)Acceptable as a topic of discussion; not subject to taboo.

   “Once the group knows that suicide is a speakable topic […]”

   “2016, Major Kwark in Ratchet and Clank (film), 75m Arrest this man for his speakable crimes against the galaxy.”

3. (not-comparable, obsolete)Capable of speech.

   “Redouble then this miracle, and say, / How cam'st thou speakable of mute […]”