The phrase "out of wedlock children" is often considered outdated and stigmatizing towards children who were born to unmarried parents. There are several synonyms that can be used to describe these children that are more inclusive and respectful. For example, "children born to unmarried parents," "nonmarital children," or simply "babies born outside of marriage." Additionally, it's important to note that the term "illegitimate child" should not be used as it carries a negative connotation and perpetuates harmful stereotypes. It's crucial to use language that does not shame or discriminate against children based on their parents' marital status.