Answer:

messrs

AnswerCrossword Clue
MESSRSMr. and Mr.
MESSRSCollective title
MESSRSGentlemen (abbr.)
MESSRSGents (abbr.)
MESSRSGuys, in a salutation
MESSRSMr. and Mrs.
MESSRSLtr. opener
MESSRSGp. address
MESSRSMr. + Mr.
MESSRSLetter header abbr.
MESSRSCounterpart of Mmes.
MESSRSPeanut and Coffee (abbr.)
MESSRSFr. gentlemen
MESSRSPlural of Mr.
MESSRSLetter opener
MESSRSTwo gentlemen, in short
MESSRSGentlemen: Abbr.
MESSRSMessieurs: Abbr.
MESSRSMisters: Abbr.
MESSRSMates of mmes.
MESSRSSalutation abbr.
MESSRSAbbr. preceding multiple surnames
MESSRSLetter abbr.
MESSRSPolite title: Abbr.
MESSRSAbbr. at the head of a letter
MESSRSAbbr. before multiple surnames
MESSRSOpposite of misses: Abbr.
MESSRSAbbr. in a salutation
MESSRSOld-fashioned letter opener: Abbr.
MESSRSSalutation abbreviation
MESSRSQuaint letter opener: Abbr.
MESSRSLead-in to multiple last names
MESSRSQuaint letter-opening abbr.
MESSRSOld letter opener: Abbr.
MESSRSAbbr. at the head of a letter, sometimes
MESSRSBrief salutation for men?
MESSRSCounterpart to "mmes"
MESSRSMultiple misters (Abbr.)
MESSRSLetter abbr. for gents
MESSRSPartners of Mmes.