There are 15 words that start with 'vacat'.
| vacate | vacated | 
| vacates | vacating | 
| vacation | vacatable | 
| vacations | vacationed | 
| vacationer | vacationers | 
| vacationing | vacationist | 
| vacationists | vacationland | 
| vacationlands | |
Note: These 15 words that start with 'vacat' are found from the USA & Canada version of the tournament Scrabble word list.