Related Clues:

• Promise to uncle, perhaps
• Would-be brother
• Telethon promise
• Veiled statement?
• Firm commitment
• 'I shall return,' e.g
• Go slowly by place that has been offered to uncle
• One of two at a wedding
• Assertion from car manufacturer found to be empty?
• "Cross my heart," e.g
• Sacred assurance
• Altared statement?
• Vow, affirm
• One given at a wedding
• "I do," in weddings