The term "negro child" is outdated and racist, and it is important to use more appropriate and respectful language when referring to black children. Some synonyms that can be used instead are "black child," "African American child," or simply "child of color." It is important to respect someone's identity and avoid using language that perpetuates stereotypes and prejudice. It is also important to understand the historical context of language and how certain terms can be hurtful or offensive to different communities. By using more inclusive and respectful synonyms, we can create a more welcoming and inclusive society.