Relating to or being an utterance that performs an act or creates a state of affairs by the fact of its being uttered under appropriate or conventional circumstances, as a justice of the peace uttering I now pronounce you husband and wife at a wedding ceremony, thus creating a legal union, or as one uttering I promise, thus performing the act of promising.
A performative utterance.
per·for′ma·tivi·ty (-tĭvĭ-tē) n.
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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.