This is the 16005th most frequent Polish word.
trudnymi
"Trudnymi" means "difficult" or "hard" in the instrumental plural form in Polish.
'Trudnych' is used as an adjective describing the noun 'zadań' (tasks).
Niektórzy uczniowie mieli problem z rozwiązaniem tych trudnych zadań.
Some students had trouble solving these difficult tasks.
'Trudnych' is part of a descriptive phrase modifying 'spotkanie' (meeting) to emphasize its complexity.
Spotkanie okazało się jednym z najbardziej trudnych, w jakich brałem udział.
The meeting turned out to be one of the most difficult ones I have attended.
'Trudnymi' modifies 'uczucia' (feelings) showcasing a scenario where understanding of them posed difficulty.