Related Clues:

• Convention like 13 across has level of intelligence for providing half the silhouette
• Conventional laws of courtesy
• Decorum, ceremony
• Conventional courtesy
• Make best man learn about decorum at the reception?
• Code of behaviour
• Civility
• Civilised manners quite variable in character not taking sides
• Form quite unpredictable -- better ignoring first and last
• Quite ridiculous contents of letter giving protocol
• Form of civilised manner and decorum
• Correct behaviour, awfully quiet – vetted endlessly
• What bows were once examples of
• Bishop in story has social graces and the proper means to chew the fat
• Tweet quite out of order -- women ignored acceptable behaviour