Xmas

I was always told that Xmas was a bad form to use because it x's the Christ from Christmas. Turns out, that's wrong.

Xmas dates to 1551 from X'temmas where the X is an abbreviation for Christ based on the Greek word for "Christ," Χριστος. Note the first letter of the word. Earlier similar abbreviations with Xp- or Xr- appear as early as the 12th century, including an attestation of Xres mæssan ("Christmas") in 1123.

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Here's to a very Merry Christmas to you and yours!