• Unto

    Pronunciation

    Origin

    By analogy with until, substituting to for till.

    Full definition of unto

    Conjunction

    1. (obsolete) (poetic) Up to the time or degree that; until; till.

    Preposition

    1. (archaic or poetic) Up to, indicating a motion towards a thing and then stopping at it.Sir Gawain rode unto the nearby castle.
    © Wiktionary