person in theatre or opera who prompts or cues actors or singers when they forget their lines or movements
A prompter with his script, 1936
The prompter (sometimes prompt) in a theatre is a person who prompts or cues actors when they forget their lines or neglect to move on the stage to where they are supposed to be situated. The role of the souffleur, or prompter, reaches back to the medieval theatre, but has disappeared in countries like Britain, the United States, France, and Italy. In these places, actors are expected to assist each other in case they forget their lines. However, in Germany and central Europe, the job of the prompter is still very much alive and integral to the repertory system. This is because multiple plays are performed in rotation each week, making it challenging for actors to memorise all their lines.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).