adj. cloud·i·er, cloud·i·est
1. Full of or covered with clouds; overcast.
2. Of or like a cloud or clouds.
3. Marked with indistinct masses or streaks: cloudy marble.
4. Not transparent, as certain liquids.
a. Open to more than one interpretation.
b. Not clearly perceived or perceptible.
6. Troubled; gloomy: His future at the company is cloudy.
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.