vouvoie

— My hairdresser does not like this, for instance, and will often vouvoie even clients younger than him if he doesn't know them.[…]In the local gyms I've been to there has been a very "copain copain" ambience and tutoiement has been the rule, in the changing rooms as elsewhere. I noticed for instance that at my free trial session the personnel vouvoied me but once I had signed up I was tu.[…]Alex immediately eliminated one of the suspects because the murdered woman would have vouvoied her.