Labeling a young child as an "idiot" for a mistake or misbehavior is generally considered inappropriate and harmful behavior. Children make mistakes as they learn and grow, and it's crucial for parents to approach these situations with patience, understanding, and constructive guidance.
It's important to recognize that everyone has their own parenting style and may react differently to certain situations. However, using hurtful language towards a child can have negative effects on their self-esteem and emotional well-being. Ideally, parents should use these moments as opportunities for teaching and supporting their child's development.
If you feel comfortable, you could try talking to your father about how his words may affect your younger brother and suggest alternative ways of addressing misbehavior. However, if you don't feel safe or able to discuss this with your father directly, consider seeking support from another trusted adult, like a teacher, school counselor, relative, or friend's parent.
Remember, it's essential to prioritize the well-being of your younger brother and yourself. If you ever feel unsafe or need someone to talk to, don't hesitate to reach out to someone you trust. Child Protective Services and helplines are also available in many countries to provide assistance and support in situations where a child's well-being is a concern.
Please keep in mind that every family situation is unique, and it's essential to seek advice and support from individuals who can better understand your specific circumstances.