1. One who prompts; one whose business is to aid an actor or speaker when at a loss for the next words.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• promotea,
• promptor,
• promated,
• promptes,
• promopted,
• primater,
• promited,
• promptley,
• primeter,
• promotor,
• promter,
• premeter,
• prmpted,
• prompte,
• prompley,
• promate,
• prompet,
• promtor,
• promptely,
• promite

• primipara,
• Primavera,
• prompt,
• prompting,
• prim up,
• pre-emptor,
• promptness,
• primiparous,
• pre-emption,
• prompt copy,
• primp,
• prompt box,
• preemptor,
• promptitude,
• preemptive,
• promptly,
• promptbook,
• preempt.

The adjective form of the word "prompter" is "prompt".

The plural of the "prompter" can be the "prompters".

The singular of the "prompter" can be the "prompter".