unleavened means: This is a term to describe baked goods such as breads and cakes that don’t use any leavening agents like baking powder, baking soda or yeast. (in Cooking Dictionary)

What else does unleavened mean?

Baking bread without raising agents. Baked thin. (in Cooking Dictionary)

It is made without any yeast or other leavening agents. (in Merlin Dictionary)