Fiul is a Romanian word that translates to "son" in English. However, there are several other synonyms that can be used to convey the same meaning. One option is "băiat", which translates to "boy". Another synonym is "pui", which is often used in a more affectionate context and translates to "little one". "Descendent" is also a synonym, which refers to a male offspring of a particular family. Additionally, "fecior" and "moștenitor" are other synonyms for "son" which both emphasize inheritance. By using these synonyms, speakers of Romanian have a variety of ways to refer to their sons in different contexts.