There are 14 words that start with 'dicta'.
| dicta | dictate | 
| dictated | dictates | 
| dictator | dictating | 
| dictation | dictators | 
| dictations | dictatorial | 
| dictatorship | dictatorially | 
| dictatorships | dictatorialness | 
Note: These 14 words that start with 'dicta' are found from the USA & Canada version of the tournament Scrabble word list.