Notes: The PN form has been transformed under influence of *stim 'gall' q.v. Otherwise the correspondences are regular.
For phonetic reasons, as well as because of another quite satisfactory etymology, one must give up the comparison of PWC *žǝ with Av. c:in, PN *stim etc. 'gall', proposed by Trubetzkoy (1930, 278; see also Шагиров 1, 205).