Decastere is a unit of measure for volume, typically used to measure dry goods such as wheat and corn. It is equivalent to 10 stere and is rarely used in modern times. However, there are a few synonyms that can be used in place of decastere. One such synonym is decaster, which has the same definition as decastere. Another possible synonym is decister, which is also equal to 10 stere. Additionally, cubic decameter can be used as a synonym for decastere, as they have the same volume measurement. While these terms are not commonly used, they can be useful to know for those studying or working in agriculture or trade industries.