tr.v. out·ran (-răn), out·run, out·run·ning, out·runs
a. To run faster than.
b. To escape from: outrun one's creditors.
2. To go beyond; exceed: "Man's ingenuity has outrun his intelligence" (Joseph Wood Krutch).
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.