This is the 17593rd most frequent Polish word.
zdradzić
"Zdradzić" means "to betray" or "to reveal (a secret)."
In this sentence, 'zdradzić' is used to mean 'to reveal' or 'to betray a secret', showing a disclosure of confidential information.
On zdradził swoją tajemnicę.
He revealed his secret.
Here, 'zdradzić' means 'to betray', specifically in the context of being unfaithful or disloyal to a person.
Nie chciałam zdradzić swojej przyjaciółki.
I did not want to betray my friend.
In this context, 'zdradzić' signifies 'revealing' a piece of information, often in a casual or conversational manner.