How to Spell shy

Middle English schey, going back to Old English scēoh, going back to West Germanic *skeuh(w)a- (whence also Middle High German schiehe, schiech "timid, despondent," and, with alteration or variant ablaut, Middle Dutch scu, scouw "timid"), perhaps extended form of Indo-European *(s)keu̯(H)- "perceive, watch" {mat|show:1|}