Decreases the level of smoothness for mesh objects by one level.

Button
Ribbon: Home tab
Mesh
panel
Smooth
LessNot available on the ribbon
in the current workspace
Menu: Modify
Mesh
Editing
Smooth
LessNot available in menus
in the current workspace
Toolbar: Smooth
Mesh
Decrease the smoothness of selected mesh objects by one level. You can only decrease the smoothness of objects whose level of smoothness is 1 or higher. You cannot decrease the smoothness level of objects that have been refined.

You can decrease the smoothness of multiple objects. If the selected objects have different levels of smoothness, their respective levels are decreased by one. If the selection set contains ineligible objects, those objects can be filtered out.