what is the shorcut for Mean uncrease With the face or edges selected. In edit mode when press Shift+E i can make Mean Crease to make the edge sharper. But after making the crease if i want to remove the crease i have to go in N panel in Edges Data to give a value 0. Like the Shift+E shortcut is there any Mean uncrease or say i want remove crease. Any suggestion or help. Thanks.
The best I think you can do is press Shift+E then -,1.

The reason for this is that creasing does an offset from the current crease value. Pressing -1 offsets from the maximum crease value an edge could have, which is '1', to '0'.