decydujce
Decydujce is not a standard Polish spelling. It is typically a misspelling of decydujące, the neuter singular or neuter plural form of the adjective decydujący meaning decisive or determining. The correct form is used to describe factors, criteria, or elements that influence an outcome.
Etymology and form: decydujące derives from the verb decydować (to decide) and from the noun decyzja (decision).
Usage: decydujące is common in formal and technical language. It appears in phrases such as czynniki decydujące
See also: decyzja, decydować, decydujący, czynniki decydujące.
In summary, decydujące is the correct, widely used form to express decisiveness or determinative influence; decydujce