Dramatically, he tells people what to say (8)

I believe the answer is:

prompter

I'm a little stuck... Click here to teach me more about this clue!

'dramatically he tells people what to say' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

This is all the clue.

Can you help me to learn more?

(Other definitions for prompter that I've seen before include "Drying actor's helper" , "Reminder" , "Helper of actors' memory" , "to give help on the line?" , "I suggest" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.