There are 12 words that start with 'demol'.
| demolish | demolished | 
| demolisher | demolishes | 
| demolition | demolishers | 
| demolishing | demolitions | 
| demolishment | demolishments | 
| demolitionist | demolitionists | 
Note: These 12 words that start with 'demol' are found from the USA & Canada version of the tournament Scrabble word list.