1. Determined, influenced, or controlled by something else.
2. Grammar Subordinate to another clause, phrase, or word.
3. Relying on or requiring the aid or support of another: adult children who are still dependent on their parents.
4. Needing to continue use of a drug or other substance or engagement in a specific activity in order to avoid experiencing withdrawal symptoms: dependent on alcohol.
5. Archaic Hanging down.
also de·pen·dant One who relies on another, especially for financial support.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.