5 Letter Words Starting With IS
There are 23 valid 5 letter words that start with IS, drawn from NWL2023, CSW24, and Words With Friends. Sorted below by score, with the single highest scorer called out.
Highest Scoring 5-Letter Words
US Scrabble (NWL)
isize - 14 points
UK Scrabble (CSW)
isize - 14 points
Words With Friends
isize - 14 points
5 Letter Words (23)
View all words starting with ISTop 20 Highest-Scoring 5 Letter Words Starting With is
Point values shown for US Scrabble, UK Scrabble, and Words With Friends. The average across this full 23 word list is 20.9 combined points.
| Rank | Word | US Scrabble | UK Scrabble | WWF Points | Total |
|---|---|---|---|---|---|
| #1 | isaac | 7 | 7 | 8 | 22 |
| #2 | isawa | 8 | 8 | 8 | 24 |
| #3 | isbas | 7 | 7 | 8 | 22 |
| #4 | iseum | 7 | 7 | 9 | 23 |
| #5 | ishes | 8 | 8 | 7 | 23 |
| #6 | isiac | 7 | 7 | 8 | 22 |
| #7 | ising | 6 | 6 | 8 | 20 |
| 🏆 #8 | isize | 14 | 14 | 14 | 42 |
| #9 | islam | 7 | 7 | 9 | 23 |
| #10 | islay | 8 | 8 | 8 | 24 |
| #11 | isled | 6 | 6 | 7 | 19 |
| #12 | isles | 5 | 5 | 6 | 16 |
| #13 | islet | 5 | 5 | 6 | 16 |
| #14 | islot | 5 | 5 | 6 | 16 |
| #15 | ismal | 7 | 7 | 9 | 23 |
| #16 | isnad | 6 | 6 | 7 | 19 |
| #17 | isnae | 5 | 5 | 6 | 16 |
| #18 | isoln | 5 | 5 | 7 | 17 |
| #19 | isort | 5 | 5 | 5 | 15 |
| #20 | issei | 5 | 5 | 5 | 15 |
Where 5 Letter Words Fit on the Board
At 5 letters, a word almost always uses your entire rack plus tiles already on the board these are realistically bingo-adjacent plays rather than everyday moves, which is why the list leans heavily on compound and suffixed forms (-nesses, -ation, -izing). If you're looking for words you can play more often, shorter lengths starting with IS will give you far more flexible options try 5 letter words starting with IS for a more practical middle ground.
Frequently Asked Questions
What is the highest-scoring 5 letter word starting with is?
isize — worth 42 combined points (US Scrabble: 14, UK Scrabble: 14, Words With Friends: 14).
How many 5 letter words start with is?
23 valid words, combining entries from NWL2023, CSW24, and the Words With Friends dictionary.
Are 5 letter words realistic to actually play?
Only occasionally — you'd need most of your rack plus letters already on the board to reach 5 tiles. They're worth knowing for the rare bingo-extension play, but for regular turns, shorter is words will come up far more often.