Formal:
* Declared: Emphasizes a formal or official statement.
* Stated: Implies a clear and definite statement.
* Remarked: Indicates a comment or observation.
* Explained: Implies giving a detailed explanation.
* Asserted: Shows strong confidence in the statement.
* Announced: Implies a formal or public statement.
Informal:
* Said: The most common and neutral option.
* Replied: Indicates a response to something.
* Asked: Implies a question was asked.
* Whispered: Indicates a quiet and secretive statement.
* Shouted: Implies a loud and forceful statement.
* Muttered: Indicates a low and indistinct statement.
Figurative:
* Uttered: Emphasizes the act of speaking.
* Cried: Implies emotion, such as excitement or sadness.
* Spat out: Indicates a quick and forceful statement.
* Croaked: Implies a weak or raspy voice.
* Boomed: Implies a loud and powerful voice.
The best word to use will depend on the specific situation and the effect you want to achieve.