There are 18 words that start with 'scala'.
| scalar | scalade | 
| scalado | scalage | 
| scalare | scalars | 
| scalable | scalably | 
| scalades | scalados | 
| scalages | scalares | 
| scalawag | scalation | 
| scalawags | scalations | 
| scalariform | scalariformly | 
Note: These 18 words that start with 'scala' are found from the USA & Canada version of the tournament Scrabble word list.