de-es·ca·late or de·es·ca·late (dē-ĕskə-lāt′)
v. de-es·ca·lat·ed, de-es·ca·lat·ing, de-es·ca·lates or de·es·ca·lat·ed or de·es·ca·lat·ing or de·es·ca·lates
To decrease the size, scope, or intensity of (a war, for example).
To decrease or diminish in size, scope, or intensity: The birth rate has begun to de-escalate.
de-esca·la·tor′y (-lə-tôr′ē) adj.
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.