170 words can be made from the letters IRRIGATION. The highest-scoring word is IRRIGATION (11 points in Scrabble, 13 in Words With Friends). Longest word: 10 letters.
One word uses all 10 letters: IRRIGATION.
170 in total: 1 10-letter, 1 8-letter, 7 7-letter, 15 6-letter, 32 5-letter, 57 4-letter, 41 3-letter, 16 2-letter. Points are shown as Scrabble·Words With Friends base tile values without board multipliers.
| Letter | Scrabble | Words With Friends | Wordfeud |
|---|---|---|---|
| I | 1 | 1 | 1 |
| R | 1 | 1 | 1 |
| G | 2 | 3 | 3 |
| A | 1 | 1 | 1 |
| T | 1 | 1 | 1 |
| O | 1 | 1 | 1 |
| N | 1 | 2 | 1 |