Definition
To act mistrustfully is very similar to acting distrustfully. It means to behave with a lack of trust or confidence, often accompanied by suspicion. It implies a feeling that someone or something cannot be relied upon. Think of it as approaching a situation with a degree of doubt and wariness. It's like keeping a watchful eye on someone because you're unsure of their intentions. It is different from cautiousness, which is more about general awareness.