Ruthenian, meaning a member of the East Slavic people who formerly inhabited parts of Ukraine, Belarus, and Russia, has several synonyms. Some of these synonyms include:
1. Rusyn - a minority ethnic group primarily residing in Ukraine, Slovakia, Poland, Hungary, and Serbia.
2. Ruthene - an archaic term for a person of Ruthenian origin or descent.
3. Carpatho-Rusyn - a term used to refer to people who live in the Carpathian Mountains and are of Ruthenian ancestry.
4. Lemko - a group of ethnic people of mixed East Slavic and Carpatho-Balkan origin living primarily in Poland and Ukraine.
5. Ruski - a term used in Ukrainian to refer to a person of Russian, Belarusian or Ukrainian ethnicity.