General:
* Prescribe: This implies setting down rules or instructions.
* Specify: This emphasizes the precise nature of what is being stated.
* Determine: This emphasizes the power to decide or establish something.
* Stipulate: This suggests a formal or legal context, implying a binding agreement.
* Impose: This suggests a forceful or authoritative imposition.
* Enforce: This suggests making something mandatory.
More specific:
* Command: This emphasizes an order given by someone in authority.
* Order: This is a simple and direct synonym for "dictate."
* Declare: This emphasizes a formal or public statement.
* Pronounce: This emphasizes a formal or official statement.
* Lay down: This is a less formal synonym for "dictate."
The best synonym for "dictate" will depend on the specific context in which it is being used.