There are 12 9-letter words that end with 'lessly'.
| agelessly | aimlessly | artlessly |
| godlessly | haplessly | endlessly |
| lawlessly | joylessly | sexlessly |
| sinlessly | uselessly | witlessly |
Note: These 12 9-letter words that end with 'lessly' are found from the USA & Canada version of the tournament Scrabble word list.