1. Undisturbed by strife, turmoil, or disagreement; tranquil: a peaceful hike through the forest. See Synonyms at calm.
2. Inclined or disposed to peace; peaceable: a peaceful solution to the dispute.
3. Not involving violence or employing force: a peaceful protest.
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.