to-

to- particle expressing separation, from W.Gmc. *ti- (Cf. O.Fris. ti-, O.H.G. zi-, Ger. zer-), from P.Gmc. *tiz-, cognate with L. DIS (Cf. dis)-. Some 125 compound verbs with this element are recorded in Old English; their number declined rapidly in Middle English and disappeared by c.1500 except as conscious archaisms.