This is the 14020th most frequent Polish word.
potwierdzać
To confirm.
Here, 'potwierdza' is employed to mean substantiating or providing evidence for an idea or thought.
Fakt ten potwierdza nasze podejrzenia.
This fact confirms our suspicions.
Here, 'potwierdzam' is used to indicate the act of officially affirming information.
Potwierdzam swoją obecność na zebraniu.
I confirm my attendance at the meeting.
In this sentence, 'potwierdziła' refers to acknowledging and validating an obligation or responsibility.