This is the 2008th most frequent Polish word.
gorzej
"Worse."
The word 'gorzej' is used here as a comparative adverb, indicating a lesser state of well-being compared to the previous day.
Czuję się dziś gorzej niż wczoraj.
I feel worse today than yesterday.
In this usage, 'gorzej' describes a worsening condition or situation as a result of a specific event.
Gorzej jest, gdy zaczyna padać deszcz.
It gets worse when it starts to rain.
The word 'gorzej' emphasizes increasing severity of an already unfavorable outcome.