tr.v. oust·ed, oust·ing, ousts
1. To eject from a position or place; force out: "the American Revolution, which ousted the English" (Virginia S. Eifert).
2. Law To effect an ouster of (a party) from a property.
[Middle English ousten, from Anglo-Norman ouster, from Latin obstāre, to hinder; see OBSTACLE.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. 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.