Word Origin & History
O.E. wundor "marvelous thing, marvel, the object of astonishment," from P.Gmc. *wundran (cf. O.S. wundar, M.Du., Du. wonder, O.H.G. wuntar, Ger. wunder, O.N. undr), of unknown origin. In M.E. it also came to mean the emotion associated with such a sight (late 13c.). The verb is from O.E. wundrian. Used
colloquially in Pennsylvania German areas in some transitive senses (It wonders me that ... for "I wonder why ..."); this was common in M.E. and as late as Tindale (1533), and a correspondent reports the usage also yet survives in Yorkshire/Lincolnshire. Related: Wondered, wondering, wonders.