There are 15 words that start with 'eluc'.
| elucidate | elucidated | 
| elucidates | elucidator | 
| elucubrate | elucidating | 
| elucidation | elucidative | 
| elucidators | elucubrated | 
| elucubrates | elucidations | 
| elucubrating | elucubration | 
| elucubrations | |
Note: These 15 words that start with 'eluc' are found from the USA & Canada version of the tournament Scrabble word list.