This is the 8445th most frequent French word.
additionnels
Additional.
Here, 'additionnels' is used as an adjective to describe 'fonds', indicating the extra funds required.
Nous avons besoin de fonds additionnels pour compléter le projet.
We need additional funds to complete the project.
In this sentence, 'additionnels' modifies 'documents', emphasizing added materials necessary for submission.
Les documents additionnels doivent être soumis avant la fin de la semaine.
The additional documents must be submitted before the end of the week.
The word 'additionnels' qualifies 'efforts', showing that extra endeavors are needed.