1. the main theme or central idea of a speech, conference, or event
2. a speech that presents the main theme at a conference or convention
3. the fundamental tone of a musical scale
Usage: music

1. to give the keynote speech at an event
2. to set the underlying tone or theme for something

Examples

• The keynote of the conference was innovation in technology.
• She delivered the keynote at the medical convention.
• The mayor will keynote tomorrow’s business summit.
• Environmental protection was the keynote of his campaign.
• The pianist played the piece in the keynote of C major.
• His opening remarks keynoted the entire discussion.
• The keynote speaker drew a crowd of over 500 people.
• Collaboration keynotes our approach to problem-solving.