Share this page with your Friend(s) Add this page to your Favourites Sitemap	Mnemonic Devices > Spelling and Grammar > Faithfully or Sincerely Faithfully or Sincerely   Faithfully or Sincerely - Which do you use to sign off a letter? Dear Sir / Yours Faithfully. Dear Mr Blah / Yours Sincerely. The rule is "Never 2 S's together"
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