1. Up to the time of: We danced until dawn.
2. Before (a specified time): She can't leave until Friday.
3. Scots Unto; to.
1. Up to the time that: We walked until it got dark.
2. Before: You cannot leave until your work is finished.
3. To the point or extent that: I talked until I was hoarse. See Usage Note at till2.
[Middle English : un-, up to (from Old Norse und; see ant- in the Appendix of Indo-European roots) + til, till; see TILL2.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.