coun·sel·or also coun·sel·lor (kounsə-lər, -slər)
1. A person who gives counsel; an adviser.
2. An attorney, especially a trial lawyer.
3. A person who supervises children at a summer camp.
4. A person, especially a licensed professional, who treats people with mental, emotional, and behavioral disorders and problems. See Usage Note at council.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.