1. Steadfast adherence to a strict moral or ethical code: a leader of great integrity.
2. The state of being unimpaired; soundness: The building's integrity remained intact following the mild earthquake.
3. The quality or condition of being whole or undivided; completeness: replaced a lost book to restore the integrity of his collection.
[Middle English integrite, from Old French, from Latin integritās, soundness, from integer, whole, complete; see tag- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.