from The American Heritage® Dictionary of the English Language, 4th Edition

  • prep. To.
  • prep. Until: a fast unto death.
  • prep. By: a place unto itself, quite unlike its surroundings.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • conj. Up to the time or degree that; until; till.
  • prep. Up to, indicating a motion towards a thing and then stopping at it.

from the GNU version of the Collaborative International Dictionary of English

  • conj. Until; till.
  • prep. To; -- now used only in antiquated, formal, or scriptural style. See To.
  • prep. Until; till.

from The Century Dictionary and Cyclopedia

  • To: now somewhat antiquated, but much used in formal or elevated style.
  • They also brought a full intelligence in reference unto the particulars they were sent about.
  • Up to the time or degree that; until; till.


Middle English : un-, up to; see until + to, to; see to.
(American Heritage® Dictionary of the English Language, Fourth Edition)
By analogy with until, substituting to for till. (Wiktionary)


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  • Unto the stock, that hath been simmering
    slowly for nearly twenty-four hours already,
    cast ye a bushel of the following, mixed...

    - Peter Reading, receipt, from Diplopic, 1983

    June 29, 2008