confirm

Confirm means to make something official or true by agreeing with it or checking the facts.

When we talk about confirming something, we usually mean that we're verifying or making sure that what someone is saying or doing is right. For example, when you apply for a job, the employer might ask your previous boss to confirm that you worked there and did a good job. In this case, your old boss would send an email or make a phone call to say "yes, they're great!" It's like checking a fact, but with people instead of just numbers or dates. We also use confirm when we want to show agreement with someone's statement or plan, like when you ask a friend if they can meet up and they confirm by saying yes, I'm free then.