This is the 13887th most frequent Polish word.
poniedziałki
"Poniedziałki" means "Mondays" in English.
The word 'poniedziałki' is used here in the nominative plural form to refer to multiple occurrences of the day Monday.
Poniedziałki są dla mnie zawsze trudne.
Mondays are always difficult for me.
The word 'poniedziałków' is used in the genitive plural form, indicating negation and referring to Mondays generally.
Nie lubię poniedziałków, ponieważ muszę wcześnie wstawać.
I don't like Mondays because I have to get up early.
The word 'poniedziałki' is used in the locative plural form, indicating the time context during Mondays.