This is the 17426th most frequent Polish word.
zasadności
"Zasadności" means "validity" or "justifiability" in English.
The term 'zasadność' (validity) is used to express considerations about whether the idea is rational or justified here.
Zastanawiam się nad zasadnością tego pomysłu.
I am wondering about the validity of this idea.
Here, 'zasadność' (appropriateness) refers to evaluating whether the behavior is proper or correct in a given context.
Nie jestem pewny zasadności takiego postępowania.
I am not sure about the appropriateness of such behavior.
In this context, 'zasadność' (legitimacy) implies the need to examine whether the assertion is grounded or valid scientifically or logically.