This is the 9095th most frequent Polish word.
stwierdził
"Stwierdził" means "he stated" or "he asserted" in English.
"Stwierdził" is used here to express someone claiming or stating something as factual.
Stwierdził, że rzeczywiście pomylił drogę.
He stated that he indeed took the wrong path.
"Stwierdził" functions as declaring or confirming a situation or fact in this context.
Stwierdził, że problem został rozwiązany.
He declared that the issue had been resolved.
"Stwierdził" conveys the act of determining something professionally or analytically, such as a diagnosis in this case.