Including the word "Christmas" itself, 217 English words can be formed from the letters in the word "Christmas." No other single word can be formed using each letter in "Christmas" exactly once.
There are 71 anagrams that can be formed from the letters of "Christmas." Anagrams are words or phrases that are created from rearranging the letters in a word or phrase and using each exactly once. However, all these anagrams are two words in length, such as "charm sits" and "cash trims." The longest single words that can be formed using the letters in "Christmas" are "sacrist" and "tachism."