establish or strengthen as with new evidence or facts
"his story confirmed my doubts"
"The evidence supports the defendant"
support a person for a position
"The Senate confirmed the President's candidate for Secretary of Defense"
administer the rite of confirmation to
"the children were confirmed in their mother's faith"
To strengthen; to make firm or resolute.
"The encouraging words from her mentor confirmed her decision to apply for the challenging job despite her doubts."
In plain English: To confirm means to prove something is true or to officially say yes to a plan.
"Please call me tomorrow to confirm your arrival time."
Usage: Use confirm to mean verifying that information is correct or authenticating a plan, rather than strengthening someone's resolve. This verb focuses on establishing facts or finalizing arrangements instead of encouraging determination.
The word "confirm" comes from the Latin phrase cōnfirmāre, which literally means "to make firm." It entered English via Old French, originally carrying the sense of strengthening or establishing something.