This is the 4453rd most frequent French word.
indispensables
Absolutely necessary; essential.
Here, 'indispensables' is used as an adjective to describe 'documents', implying they are necessary or required for the trip.
Les documents indispensables pour le voyage sont prêts.
The essential documents for the trip are ready.
In this sentence, 'indispensables' describes 'compétences', suggesting that these skills are crucial for success.
Ces compétences sont indispensables pour réussir dans ce domaine.
These skills are essential to succeed in this field.
Here, 'indispensable' is used as a predicate adjective with 'il est', emphasizing the importance of good preparation.