There are 12 words that start with 'enum'.
| enumerate | enumerable | 
| enumerated | enumerates | 
| enumerator | enumerating | 
| enumeration | enumerative | 
| enumerators | enumerations | 
| enumerability | enumerabilities | 
Note: These 12 words that start with 'enum' are found from the USA & Canada version of the tournament Scrabble word list.