The verb is borrowed from Scots whidder, whither (“(of the wind) to bluster; to move quickly”), a frequentative form of whid (“(of wind) to gust; to move quickly”), of Scandinavian/North Germanic origin, from Old Norse hviða (“gust of wind”). Related to Middle English hwiþa, whyȝt (“breeze; wind”), Old English hwiþa, hwiþu, hweoþu (“breeze”). The noun is derived from the verb.