Word Study
unto
CIDE DICTIONARY
unto, prep. [OE. unto; un- (only in unto, until) unto, as far as + to to; this un- is akin to AS. until, OFries. und OS. und until, conj. (cf. OS. unt unto, OHG. unzi), Goth. und unto, until. See To, and cf. Until.].
- To; -- now used only in antiquated, formal, or scriptural style. See To. [1913 Webster]
- Until; till. Num. xxxv. 25. [1913 Webster]
unto, conj.
Until; till. Chaucer. [1913 Webster]
OXFORD DICTIONARY
unto, prep. archaic = TO prep. (in all uses except as the sign of the infinitive); (do unto others; faithful unto death; take unto oneself).
Etymology
ME f. UNTIL, with TO replacing northern TILL(1)
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