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O'Ca·sey

(ō-kāsē), Sean Originally John Casey. 1880-1964.

Irish playwright. His dramas, including Juno and the Paycock (1924) and The Plough and the Stars (1926), show compassion for the poor and concern over Irish political issues.

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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