Answer: dearsir

AnswerCrossword Clue
DEARSIRForm of address.
DEARSIRVanishing salutation
DEARSIRFormal opening
DEARSIRLetter opener, sometimes
DEARSIRGeneric letter opener
DEARSIRCat Power debut
DEARSIRIt may follow a name and address
DEARSIRFormal introduction
DEARSIRFormal introduction?
DEARSIRGeneric greeting
DEARSIRStart of a letter
DEARSIRCompanion of "Yours truly"
DEARSIROpener of sorts
DEARSIRStart of many a letter.
DEARSIRStandard letter phrase.
DEARSIROld-timey letter opening
DEARSIRLetter opener.
DEARSIRWords of address.
DEARSIREpistolary term of address.
DEARSIRBusiness letter salutation.
DEARSIRLetter opener, maybe
DEARSIRBusiness-letter opening
DEARSIRCertain letter starter
DEARSIRFormal letter opener
DEARSIRLetter opener, of a sort
DEARSIRLetter opener
DEARSIRLetter salutation
DEARSIRCordial opening
DEARSIRLetter opener?