Gerund: the act or state of lacking trust.
Persistent mistrusting of government institutions can erode social cohesion.
Une méfiance persistante envers les institutions gouvernementales peut éroder la cohésion sociale.
mistrustinggerund / present participle Used as a present participle adjective describing a person or thing that lacks trust.
She gave him a mistrusting look when he offered to help with her project.
Elle lui a lancé un regard méfiant quand il a առաջարկé de l'aider pour son projet.