A valediction (derivation from Latin vale dicere, "to say farewell"), or complimentary close in American English, is an expression used to say farewell, especially a word or phrase used to end a letter or message, or the act of saying parting words whether brief or extensive.
For the greetings counterpart to valediction, see salutation.
The term is also used to refer to the speech given by a valedictorian at a commencement and to refer to final prayers and remarks at the graveside before a burial.
Valedictions normally immediately precede the signature in written correspondence. The word or words used express respect, esteem, or regard for the person to whom the correspondence is directed, and the exact form used depends on a number of factors
The following table contains complimentary closings as recommended for business hard-letter use by two authorities: Barron's Educational Series and American Management Association.
Valedictions in formal e-mail are similar to valedictions in letters; on the whole, they are variations of "regards" and "yours". However, a wide range of popular valedictions are used in casual e-mail but very rarely in letters.
Christian clergy often use Yours in Christ, Sincerely in Christ, or Yours sincerely in Christ.
Current regulations of the United States Department of Defense, the Joint Chiefs of Staff, the U.S. Air Force, the U.S. Army, and the U.S. Navy call for two complimentary closings for letters: "Respectfully yours" and "Sincerely". "Respectfully yours" is reserved for the President, except the Army includes the President's spouse, and for the President-elect. "Sincerely" is used in all other cases.