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con·cerned

(kən-sûrnd)

adj.

1. Interested and involved: sent a memorandum to those concerned.

2. Having or showing concern; worried or anxious: the concerned parents of youthful offenders.

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:

Indo-European Roots

Semitic Roots

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.

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