1. a person who delivers a keynote speech at a conference, convention, or other event

Examples

• The conference organizers announced that the CEO would be the keynoter at this year’s summit.
• As the evening’s keynoter, she delivered an inspiring speech about innovation.
• The political convention selected a popular governor as their keynoter.
• The keynoter’s presentation set the tone for the entire three-day event.
• They’re still searching for the right keynoter to open the medical conference.
• The keynoter addressed an audience of over 2,000 attendees.