There are 15 words that start with 'level'.
| level | levels | 
| leveled | leveler | 
| levelly | levelers | 
| leveling | levelled | 
| leveller | levellers | 
| levelling | levelness | 
| levelheaded | levelnesses | 
| levelheadedness | |
Note: These 15 words that start with 'level' are found from the USA & Canada version of the tournament Scrabble word list.