Formal:
* Authorized: Implies legal permission or sanction.
* Formal: Emphasizes adherence to protocol or established procedures.
* Legitimate: Indicates that something is genuine and valid.
* Sanctioned: Suggests approval by a higher authority.
* Authoritative: Indicates that something is reliable and credible.
Informal:
* Formal: Sometimes "official" is used colloquially to simply mean something is done properly.
* Real: Can be used to emphasize authenticity or seriousness.
* Proper: Means according to established rules or customs.
Specific meanings:
* Governmental: Refers to something associated with the government.
* Public: Indicates something intended for everyone.
* Corporate: Pertaining to a company.
* Professional: Refers to something done in a skilled and competent way.
Example:
Instead of saying, "The official announcement was made yesterday," you could say:
* "The authorized announcement was made yesterday." (formal)
* "The real announcement was made yesterday." (informal)
* "The government announcement was made yesterday." (specific)
Remember to choose the word that best fits the specific context and your desired tone.