O.E. styrian, from P.Gmc. *sturjanan (cf. M.Du. stoeren, Du. storen "to disturb," O.H.G. storan "to scatter, destroy," Ger. stören "to disturb"), probably from the root of
storm (q.v.). The noun sense of "commotion, disturbance, tumult" (late 14c., in phrase on steir)