2-Letter Words Ending in S

There are 5 words in the English language that are 2 letters long and end in S. These are valid words, compliant with the dictionary and allowed in games like Scrabble and Words With Friends.

The dominant letters in these words are: S, A, E, I, O. They appear most frequently in 2-letter words ending with S.

In words ending with S, the rarest letters are: A, E, I, O, U. They appear sporadically, but are worth knowing – especially for difficult layouts in word games.