accusatory
Showing blame or acting like someone definitely did something wrong.
Accusatory describes a tone, look, or statement that blames someone or suggests they've done something wrong. When your teacher gives you an accusatory stare after finding gum under your desk, that look says “I think you did this” without using words. When someone speaks in an accusatory tone, their voice carries suspicion and judgment, making the listener feel attacked or blamed.
An accusatory question like “Why did you break my pencil?” assumes guilt rather than asking what actually happened. Compare this to a neutral question: “Do you know what happened to my pencil?” The accusatory version has already decided you're the culprit.
You might notice accusatory language in arguments, when people point fingers instead of trying to understand what happened. An accusatory approach often makes people defensive, even when they're innocent. If your sibling uses an accusatory tone to ask about their missing cookies, you'll probably feel attacked whether you ate them or not.
The opposite approach is one of curiosity or openness, where someone genuinely wants to know the truth rather than to prove someone guilty.