to put into a trust; to monopolize; to trust; to believe in
“Et je me dis que la dernière génération de pieds-noirs à laquelle j'appartiens devrait manifester sa joie et l'imposer à l'autre partie des pieds-noirs, plus âgée, celle qui truste les associations et les leaders politiques, celle qui empêche littéralement la France de sortir de cette rancœur vis-à-vis les Arabes.” — And I tell myself that the final generation of Pieds-Noirs to which I belong should have made clear their joy and imposed it on the other part of the Pieds-Noirs, the older ones who monopolize the associations [of Pieds-Noirs] and the political leadership, who quite literally block France from escaping this resentment towards the Arabs.
trust (from English trust) + -er.