1. Breathing with difficulty; gasping: was breathless from running.
a. Excited or tense, often to the point of holding the breath: a breathless audience.
b. Tense or exciting, often in causing or being characterized by holding of the breath: breathless anticipation.
a. Not breathing; without breath.
4. Having no air or breeze; still: a breathless summer day.
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.