According to Archive.org, “sweet” is Skeu'-yay, or Wash'-tay in Lakota Sioux while “dream” is E-hahivbee-lee. I.
Within the area known today as North Dakota and South Dakota, there was an ancient tribe of natives known as the Sioux. The tribe is known as either the Lakota or the Dakota, depending upon which dialect is used. There are thirteen Sioux "subdivisions" and seven tribes, with all groups falling under the common cultural tribe known as the Sioux.
Here are some additional facts about the Lakota and their unique language:
The name for the chief in the Lakota language is "itancan".
The Lakota people almost all speak English, but thousands can speak both English as well as their native tongue.
Like most other Native American tribes, storytelling is a central part of the Lakota cultural heritage. You can learn a great deal about the history of the Sioux through their stories that are handed down from generation to generation.
Unlike English, the Lakota language doesn't just have the five vowels, but also three additional nasal vowels that add a little bit to the complexity of learning the language.
In 1840, missionaries worked to transcribe the Lakota language into written form. Today, the accepted written form of the language is approved by tribal leadership and used in various schools on the reservation to teach children how to write in their tribal language.
Here’s a collection of useful phrases in Lakota Sioux, a Siouan language spoken in parts of the USA and Canada shared by Omniglot.com.