v. con·cerned, con·cern·ing, con·cerns
1. To have to do with or relate to: an article that concerns the plight of homeless people.
2. To be of interest or importance to: This problem concerns all of us.
3. To engage the attention of; involve: We concerned ourselves with accomplishing the task at hand.
4. To cause anxiety or uneasiness in: The firm's weak financial posture is starting to concern its stockholders.
To be of importance.
1. A matter that relates to or affects one: What I do is not your concern.
a. Regard for or interest in someone or something: His concern for you is genuine.
b. A troubled or anxious state of mind: a frown that expressed great concern.
3. A business establishment or enterprise; a firm.
[Middle English concernen, from Old French concerner, from Medieval Latin concernere, from Late Latin, to mingle together : Latin com-, com- + Latin cernere, to sift; see krei- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.