Related Clues:

• Deliver a declamation
• Deliver an impassioned presentation
• Use the soapbox
• Go on at length
• Discourse
• Get on one's soapbox
• Take to the pulpit
• Lecture
• Stand up and speak
• Stand and deliver?
• Valedictorians do it
• Give an address
• Elocute
• Deliver a keynote, say
• Address the hall, e.g.