Bedeutung von “confirm” — Learner’s Dictionary

confirm

verb [ T ] us uk /kənˈfɜːm/
TRUE

B2 to say or show that something is true:

The report could not be confirmed independently.
[ + (that) ] His wife confirmed that he'd left the house at 8.
CERTAIN

B1 to make an arrangement certain:

Flights should be confirmed 48 hours before departure.
be confirmed

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