The Vietnamese word "đẻ hoang" refers to a child who is born out of wedlock, meaning the parents are not married to each other when the child is born. This term can also carry the connotation of being a "bastard," which is a more informal and sometimes derogatory term used in English.
While "đẻ hoang" primarily refers to a child born out of wedlock, it can also be used metaphorically in discussions about social norms surrounding family and marriage.