Xmas

Xmas (also X-mas) is a common abbreviation of the word Christmas. It is sometimes pronounced , but Xmas, and variants such as Xtemass, originated as handwriting abbreviations for the typical pronunciation . The 'X' comes from the Greek letter Chi, which is the first letter of the Greek word Christós (Ancient Greek: Χριστός, romanized: Khristós, lit. 'anointed, covered in oil'), which became Christ in English.

The suffix -mas is from the Latin-derived Old English word for Mass.

There is a common misconception that the word Xmas stems from a secularizing tendency to de-emphasize the religious tradition of Christmas, by taking the 'Christ' out of "Christmas". Nevertheless, the term's usage dates back to the 16th century, and corresponds to Roman Catholic, Eastern Orthodox, Lutheran and Anglican liturgical use of various forms of chi-rho monogram. In English, "X" was first used as a scribal abbreviation for "Christ" in 1100; "X'temmas" is attested in 1551, and "Xmas" in 1721.

Style guides and etiquette

The term Xmas is deprecated by some modern style guides, including those at The New York Times, The New York Times Manual of Style and Usage, The Times, The Guardian, and the BBC. Millicent Fenwick, in the 1948 Vogue's Book of Etiquette, states that Xmas "should never be used" in greeting cards. The Cambridge Guide to Australian English Usage states that the spelling should be considered informal and restricted to contexts where concision is valued, such as headlines and greeting cards. The Christian Writer's Manual of Style, while acknowledging the ancient and respectful use of Xmas in the past, states that the spelling should never be used in formal writing.