This is the 620th most frequent Czech word.
nutné
Necessary.
In this sentence, "nutné" functions as an adjective describing the necessity of an action.
Je nutné pravidelně cvičit pro udržení zdraví.
It is necessary to exercise regularly to maintain health.
In this case, "nutné" is used in a negative construction to emphasize that an action does not require urgency.
Není nutné všechno hned dokončit.
It is not necessary to finish everything immediately.
Here, "nutné" is an adjective modifying the noun "vybavení" (equipment) to indicate it is required.