prompter

One who or that which prompts, or admonishes or incites to action.

Specifically A person stationed behind the scenes or in a covered box at the front of the stage in a theater, for the purpose of assisting the actors when they are at a loss by repeating to them the first words of a sentence; also, any person who aids a public speaker, etc., by suggesting words he may be at a loss for.

One who, or that which, prompts; one who admonishes or incites to action.

One who reminds another, as an actor or an orator, of the words to be spoken next; specifically, one employed for this purpose in a theater.

comparative form of prompt: more prompt

The person who does the prompting.

a device that displays words for people to read

someone who assists a performer by providing the next words of a forgotten speech