Answer:

missmanners

Answer	Crossword Clue
MISSMANNERS	Etiquette column pseudonym
MISSMANNERS	Etiquette authority
MISSMANNERS	Pen name of etiquette doyenne Judith Martin

MISSMANNERS	Etiquette columnist
MISSMANNERS	Etiquette expert
MISSMANNERS	Proper way to behave in Biloxi?
MISSMANNERS	Longtime adviser on dos and don'ts
MISSMANNERS	Judith Martin's alter ego