This is the 17233rd most frequent Polish word.
zainteresowanym
"Zainteresowanym" means "to those interested" or "interested people."
Here, 'zainteresowanym' is used as an adjective describing the subject, agreeing in case, gender, and number with the subject.
Jestem zainteresowanym tym projektem oraz jego wynikami.
I am interested in this project and its outcomes.
In this sentence, the word is declined differently to agree with 'osoby' in gender and number.
Osoby zainteresowane mogą zgłaszać swoje aplikacje do końca miesiąca.
Interested individuals can submit their applications by the end of the month.
Here, 'zainteresowane' agrees with 'strony' in gender and number, indicating the parties involved.