General Synonyms:
* Command
* Order
* Prescribe
* Stipulate
* Specify
* Demand
* Enjoin
* Impose
* Pronounce
* Declare
Synonyms related to speech:
* Speak
* Read aloud
* Recite
* Enunciate
* Pronounce
Synonyms related to writing:
* Write
* Compose
* Scribble
* Type
* Draft
Synonyms related to power and authority:
* Rule
* Govern
* Control
* Dominate
* Regulate
The best synonym to use will depend on the specific situation and the nuance you want to convey.