Direct accusation invites direct defense. If you point a finger, you usually trigger a shield.
Try the indirect route. Describe the situation, the standard, the effect—without branding the person as the problem. Ask questions that help them notice the gap themselves. People correct faster when they feel they chose the correction.
You can also use “I” language: “I may not have explained this clearly,” “I’m concerned we’re missing something.” This protects pride while still addressing reality.
Keep the focus on behavior, not character. “This needs adjustment” lands better than “You’re careless.” One targets a process; the other attacks identity.
Correction that preserves dignity is rare, and people remember it. The aim is improvement, not humiliation—and humiliation always comes back later, with interest.