Possible Clues:

• Insincere offer to assist
• The hypocrisy of peer's civil marriage
• It's not supported by real conviction
• Empty promise
• Words without deeds
• The insincerity of a miming choirboy?
• Kissagram agency -- an insincere profession?
• Insincere promise to perform
• *Empty words (Note the last 7 letters in this answer)
• Insincere words of support