There are 16 words that start with 'sickl'.
| sickle | sickly | sickled |
| sickles | sicklied | sicklier |
| sicklies | sicklily | sickling |
| sicklemia | sicklemic | sickliest |
| sicklying | sicklemias | sickliness |
| sicklinesses | ||
Note: These 16 words that start with 'sickl' are found from the USA & Canada version of the tournament Scrabble word list.