This is the 653rd most frequent Polish word.
uznał
"Uznał" means "he/she/it recognized" or "he/she/it acknowledged."
In this sentence, 'uznał' is used to indicate acknowledging or judging something as worthwhile.
On uznał, że warto się nauczyć nowego języka.
He decided that it is worthwhile to learn a new language.
Here, 'uznał' implies a formal declaration or judgment made by an authoritative body.
Sąd uznał go za niewinnego.
The court found him innocent.
In this context, 'uznał' expresses a personal evaluation or opinion based on perception.