Possible Clues:

• Flatter
• Overdo the flattery
• Flatter effusively
• & 19 Down To be clear, you need to mix a little honey in (3,2,2,3,4)
• Praise exaggeratedly
• What to do with mortar, so flatter to a great extent? (3,2,2,4,1,6)
• Be really flattering
• Butter up big-time