Answer:

SIR

Answer	Crossword Clue
SIR	'67 Poitier role
SIR	Giuliani title
SIR	Knight's title

SIR	Knightly title
SIR	"To .. With Love"
SIR	Base address
SIR	Ma'am's counterpart
SIR	Officer's address
SIR	Poitier, as Lulu called him
SIR	Title for Galahad
SIR	Certain honorific

SIR	Giuliani's title
SIR	Jousting title
SIR	Title for Elton John
SIR	Dubbed one
SIR	Letter addressee, often
SIR	Like Lancelot
SIR	Term of address that might make you feel old
SIR	Address at boot camp

SIR	Prepare, as paint
SIR	... sandwich (military response format)
SIR	Title for some distinguished English musicians with penises
SIR	Boot camp word
SIR	Herr, here
SIR	Title for Coward
SIR	Coward or Oliver
SIR	Title

SIR	Business greeting
SIR	Officer, to a grunt
SIR	.. Barton, 1919 Triple Crown horse
SIR	Round Table address
SIR	Formal letter addressee
SIR	Elton's title
SIR	Round Table title
SIR	Military address

SIR	Knight's address
SIR	Private address?
SIR	Camelot title
SIR	Dear fellow?
SIR	Boot camp address