This is the 1967th most frequent Polish word.
dalszej
"Dalszej" means "further" or "of further" (genitive or dative singular feminine form of "dalszy").
Here, 'dalszej' modifies 'współpracy,' indicating the continuation or progression of 'cooperation'.
Musimy porozmawiać w sprawie dalszej współpracy.
We need to discuss the matter of further cooperation.
In this case, 'dalszej' relates to 'zwłoki,' emphasizing the avoidance of additional delay.
Bez dalszej zwłoki, zaczynamy projekt.
Without further delay, we are starting the project.
The term 'dalszej' pertains to 'interwencji,' describing the absence of continued actions forward.