adj. murk·i·er, murk·i·est
1. Dark or dim, as from mist: a murky sky. See Synonyms at dark.
2. Darkened, clouded, or blurry: murky waters; murky images.
3. Not clearly known, understood, or expressed: a murky future; the murky world of spies; murky writing.
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.