1. Having profound, often systematic knowledge; erudite.
2. Showing or characterized by such knowledge: a learned journal.
3. (lûrnd) Acquired by learning or experience: learned behavior.
[Middle English lerned, educated, past participle of lernen, to learn, teach; see LEARN.]
Synonyms: learned, erudite, scholarly
These adjectives mean having or showing profound knowledge: a learned jurist; an erudite professor; a scholarly treatise.
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.