Bedeutung von “confirm” im Essential American English Dictionary

confirm

verb us /kənˈfɜrm/

B1 to make sure an arrangement or meeting will happen, often by telephone or in writing:

I accepted the job over the phone, but I haven’t confirmed in writing yet.

to say or show that something is true:

His wife confirmed that he left the house at 8:00.

(Definition von “confirm” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)