She is fluent in Belarusan.

Belarusan is the alternative spelling of Belarusian.

She is studying Belarusan at the university.

Many Belarusans attended the cultural festival.

Old Belarusian was the language spoken in Belarus during the medieval period.

Belarusianness is a strong sense of national identity and pride in being Belarusian.

The Belarusization of the region has led to a resurgence of Belarusian culture.

The Belarusian People's Republic was established in 1918.