What is a synonym for confirmed?

Here are some synonyms for "confirmed," depending on the context:

General confirmation:

* Verified

* Authenticated

* Established

* Assured

* Proven

* Validated

* Substantiated

* Endorsed

* Guaranteed

In a formal setting:

* Ratified

* Sanctioned

* Approved

For a person's beliefs:

* Convinced

* Committed

* Dedicated

* Steadfast

* Unwavering

For an event:

* Set

* Scheduled

* Booked

For a diagnosis:

* Diagnosed

* Positively identified

It's important to choose the synonym that best fits the meaning and context of your sentence.