An Etymological Dictionary of the German Language/Annotated/sträuben
sträuben, verb, ‘to ruffle or bristle up, resist,’ from *striuben (for which striubeln occurs), Old High German strûben, weak verb, also Middle High German strûben, Old High German strûbên, ‘to stand motionless, look fixedly, rise aloft, bristle up, resist.’ Compare Middle High German strûp (b), ‘bristling up,’ strobeleht, strûbeleht, ‘bristly.’ To this streifen is allied. In the non-Teutonic languages indubitable cognates of the genuine Teutonic root strū̆b, ‘to be coarse,’ are wanting; yet compare Greek στρυφνὸς, ‘bitter, firm, stout’?.