Confirmed means verified as true, certain, or definite. When something is confirmed, it moves from possibility to fact. If you hear a rumor that school will be cancelled tomorrow due to snow, it's just speculation until the principal confirms it with an official announcement. Once confirmed, you can make real plans.

Doctors confirm diagnoses after running tests. Scientists confirm theories through repeated experiments. Your mom confirms your dentist appointment by calling the office. In each case, confirmation removes doubt and establishes something as real or accurate.

The word also means strengthened in a belief or habit. Someone might be a confirmed vegetarian after years of not eating meat, meaning they're fully committed to that choice. A confirmed optimist sees the bright side of things consistently and reliably.

When you confirm plans with a friend, you're making sure they're still happening. When a witness confirms a story, they're saying it’s true. Confirmation gives people confidence to act, because they know they're working with facts rather than guesses.