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col·lab·o·rate

(kə-lăbə-rāt′)

intr.v. col·lab·o·rat·ed, col·lab·o·rat·ing, col·lab·o·rates

1. To work together, especially in a joint intellectual effort.

2. To cooperate treasonably, as with an enemy occupation force in one's country.

[Late Latin collabōrāre, collabōrāt- : Latin com-, com- + Latin labōrāre, to work (from labor, toil).]

col·lab′o·ration n.

col·labo·ra′tive adj.

col·labo·ra′tor n.

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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