"Sioux" is not the name of a tribe or a language, but a whole group of related languages, split into the Lakota, Nakota and Dakota dialects.
"Siouan" refers to a very much larger family of distantly-related languages, including Hidatsa, Crow, Mandan, Assiniboine, Omaha and Winnebago.
In the Lakota dialect, the common word for the Sun is wi; in ceremonial, poetic language or ritual songs the word is anpewi.
In the Dakota dialect, the word is wi or anpetuwi (literally: the day sun).
Some words for Sun in other Siouan languages are:
Assiniboine.............................wi or ompawee'
Crow......................................Áxxaashe
Hidatsa...................................midi, miri, mapemidi
Mandan..................................minaki
Omaha/Ponca.........................min
Osage.....................................mi
Quapaw..................................mi
Oto..........................................bi
Winnebago..............................wira
Biloxi........................................ina'
Kansa......................................min
The Sioux had rituals and Sun Dances.
Sun Dance
you
Sun dance is one
One that I know was The Sun Dance....
The sun dance is one of them.
idinr fjdknk
the sun dance was a dance done at deaths ans marriges
The Sioux and their religion are important to them and to what they believe in, they believe in the Great Spirit (Wakan tanka), the circle of life and the sun dance and so on. In my opinion I think that the Sioux are really actually religious, this is because they do religion practices and have many beliefs and following it in a prescribed sequence.
the kind of ceremonies the Sioux were sun dance ceremonies.
Sioux City
The majority say that this was the Sun Dance, there are others that argue it was the Ghost Dance.