Definition of "personal letter" []

• A letter dealing with personal affairs (noun)

WordNet. Princeton University. 2010.

• "In a personal letter to General R. H. Chilton of Lee's staff he set forth his unhappiness and enumerated some of the faults he saw in the defense of the state."
• "The new pope, Alexander VI—a member of the Borgia family—mysteriously dropped all the charges and threats against him, actually writing him a personal letter of support—but why?"
• "Expecting Begin to look unfavorably on any proposal that called on Israel to give up any part of the West Bank and its claim to all of Jerusalem, I sent a personal letter to him meant to supplement a more detailed briefing on the plan to be given to him by our excellent ambassador in Israel, Samuel Lewis."