We show how to construct a graded locally compact Hausdorff \'etale groupoid from C*-algebra carrying coaction of discrete group, together with suitable abelian subalgebra. call this the extended Weyl groupoid. When is trivial and subalgebra Cartan, our agrees Renault's prove that if G second-countable grading interior trivially isotropy torsion free, then its reduced isomorphic as G. In partic...