There are 11 words that start with 'sightl'.
| sightly | sightless |
| sightlier | sightline |
| sightliest | sightlines |
| sightlessly | sightliness |
| sightlessness | sightlinesses |
| sightlessnesses | |
Note: These 11 words that start with 'sightl' are found from the USA & Canada version of the tournament Scrabble word list.