Formal:
* Announcing: This implies a formal, public statement.
* Proclaiming: This emphasizes a strong and confident declaration.
* Stating: A neutral term for simply making a statement.
* Affirming: This implies a strong belief or confirmation.
* Asserting: This suggests a forceful and confident declaration.
Informal:
* Saying: A casual way of expressing that something is being said.
* Telling: This implies communicating information directly to someone.
* Revealing: This implies the disclosure of something that was previously unknown.
* Sharing: This implies a more informal and collaborative communication.
Specific:
* Decreeing: A formal order or command.
* Pronouncing: Making a formal judgment.
* Defining: Establishing the meaning or nature of something.
The best synonym for "declaring" will depend on the specific context and the nuance you want to convey.