Deciliter is a commonly used unit of measurement for fluids and can be substituted with several synonyms. One such synonym is "tenths of a liter," which is a more descriptive term. Another synonym is "100 milliliters," which is closer to the actual metric value of a deciliter. In the medical field, it's important to note that "cc" or cubic centimeter is also used interchangeably with deciliter. In some regions, "fluid ounces" may also be used as a synonym for deciliter, although this is a less precise measurement. Regardless of which synonym is used, it's essential to ensure that the correct unit of measurement is used to maintain accuracy in scientific and medical contexts.