This is the 14049th most frequent Polish word.
powierzy
"Powierzy" means "will entrust" in English.
The word "powierzyła" here indicates the act of entrusting or confiding important or personal matters to someone trustworthy.
Maria powierzyła swoje sekrety najlepszej przyjaciółce.
Maria entrusted her secrets to her best friend.
In this sentence, "powierzyłem" demonstrates the act of placing responsibility or trust in someone for taking care of something specific.
Powierzyłem klucze sąsiadowi, gdy wyjeżdżałem na wakacje.
I entrusted my neighbor with the keys when I was going on vacation.
Here, "powierzyli" shows delegating or trusting a task or role to someone considered capable or appropriate.