The only free and comprehensive online etymological dictionary of the Spanish language

Word of the Day

diferir (Verb) "to differ"
15th cent. From Latin differre 'id.,' from dis- "away" and ferrer "to support" (see dis- and fértil respectively for continued etymologies).
Corominas, J. & J. Pascual. Diccionario crítico etimológico castellano e híspanico. 6 vols. Madrid: Gredos. 1991-1997.
Real Academia Española. Diccionario de la lengua española. Online. 23rd ed. Madrid: Espasa Calpa. 2014. http://www.rae.es/.
Sihler, A. New Comparative Grammar of Greek and Latin. Oxford University Press. 2008.

9 November 2018 - Update 3.2

A series of shadow updates were implemented over the past month: changes in formatting and font, an improved layout to display cognates in other languages, and information added.

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The Online Etymological Dictionary of Spanish is a free etymological dictionary of the Spanish language launched on August 6, 2016. An etymology is not a definition but a history of a word over time. This site provides an account of the development of the Spanish language as best as historical linguists are able to ascertain in a way that is accessible both by laymen and academics. If you enjoy using this dictionary, please consider donating to help keep this site alive.