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2-letter words ending in S

2-letter words ending in S total five: IS, AS, US, OS, and ES, and all five appear in ENABLE, Collins, and NWL2023.

5 wordsTop pick ISHighest score IS 2

5 of 5 are everyday words (100%). A friendly list: most players will know the top picks.

O ends the most 2-letter words (17); K ends the fewest (1). S ranks #10 of 26. The bar under each letter shows the size of its list.

Best words to play first 5 · most-used first

  • IS2
  • AS2
  • US2
  • OS2
  • ES2
All valid words 5

A to Z. Includes rare and Collins-only words. Linked tiles open the word's meaning, score and rhymes.

  • AS2
  • ES2
  • IS2
  • OS2
  • US2

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses
WordScrabbleWords With FriendsDictionaries
IS22All three
AS22All three
US23All three
OS22All three
ES22All three

The ending is fixed, but the first letter changes across the whole set: each word begins with a different vowel. All five also rank as common English words, so this pattern mixes familiar plays like IS and US with the less obvious OS and ES. Each has the same score, leaving recognition and board placement as the practical differences.

Five vowel starters at a glance

  • IS, AS, US, OS, and ES are the complete set of two-letter S-ending words.
  • Each word starts with a different vowel: A, E, I, O, or U.
  • All five are counted among the common English words.
  • ENABLE, Collins, and NWL2023 each include all five entries.
  • Every word has the same score: 2 points.

How do these S-ending words compare?

The five options split evenly by first letter, rather than clustering around one opening. That makes the vowel pattern easy to remember: AS, ES, IS, OS, and US cover A through U, with S held in the final slot. For a rack or crossword clue that fixes the ending, the first letter quickly narrows the choice.

The score does not separate these plays: IS, AS, US, OS, and ES each score 2. Familiarity does: IS, AS, and US are everyday forms, while OS and ES are easier to overlook when you are scanning a rack. Keep all five in mind instead of assuming the obvious trio is the complete set.

How many 2-letter words ending in S?

Tip

Memorize the vowel sequence AS, ES, IS, OS, US. It keeps the full set together and makes OS and ES less likely to slip past during a quick scan.

Questions people ask

What are the two-letter words that end in S?
The five are IS, AS, US, OS, and ES. Each begins with a different vowel, so grouping them by first letter is a quick way to recall the full set. All five are included in ENABLE, Collins, and NWL2023.
Are all five S-ending two-letter words accepted in Collins and NWL2023?
Yes, all five—IS, AS, US, OS, and ES—appear in both Collins and NWL2023. ENABLE also includes the same five, so there is no dictionary split among these entries. Check your game's word list if its rules use a different dictionary.
Which two-letter word ending in S scores the most?
None scores more than the others: IS, AS, US, OS, and ES are all listed at 2 points. Since the scores tie, choose based on the letters available and the board position rather than expecting one of these five to outscore another.

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