Undependable sort (5)

I believe the answer is:
flake
(Other definitions for flake that I've seen before include "Small flat scale" , "Chipped piece of stone" , "Piece of skin or snow" , "Split into thin pieces" , "Flat thin fragment" .)
I believe the answer is:
flake
(Other definitions for flake that I've seen before include "Small flat scale" , "Chipped piece of stone" , "Piece of skin or snow" , "Split into thin pieces" , "Flat thin fragment" .)