This is the 15635th most frequent Polish word.
sukcesów
The Polish word "sukcesów" means "successes" (genitive plural form).
The word 'sukcesów' is used in the genitive plural form here to express a quantity of successes.
Osiągnąłem wiele sukcesów w mojej karierze.
I have achieved many successes in my career.
Here, 'sukcesów' is in the genitive plural form following the preposition 'do', indicating possession.
Klucz do sukcesów to ciężka praca i determinacja.
The key to successes is hard work and determination.
In this case, 'sukcesów' is in the genitive plural form after the verb 'zazdrościć', which requires this case.