There are 18 words that start with 'orat'.
| orate | orated | orates | 
| orator | orating | oration | 
| orators | oratory | oratrix | 
| orations | oratorio | oratress | 
| oratories | oratorios | oratrices | 
| oratorical | oratresses | oratorically | 
Note: These 18 words that start with 'orat' are found from the USA & Canada version of the tournament Scrabble word list.