This is the 5455th most frequent Polish word.
słabych
"Of the weak" (genitive plural form of "słaby").
used as an adjective describing the noun 'słabych' in plural as weak learners.
Lubię pomagać słabych w nauce.
I like to help the weak in learning.
'słabych' functions as an adjective describing 'zawodników', players, in accusative plural.
Słabych zawodników nie wybieramy do drużyny.
We do not choose weak players for the team.
'słabych' describes 'podstaw', grounds, indicating their lack of strength or validity.