Diccionario crítico etimológico de la lengua castellana
The Diccionario crítico etimológico de la lengua castellana is a four-volume etymological dictionary of Spanish compiled by the Catalan philologist Joan Corominas (1905-1997), and first published by Francke Verlag in Bern, Switzerland, in 1954.
Its publication was followed in 1961 by that of a single-volume abridged version (Breve diccionario etimológico de la lengua castellana), and in the 1980s by a six-volume revised and expanded version (retitled Diccionario crítico etimológico castellano e hispánico).
This dictionary was praised for its ambitious approach, its exhaustive coverage of the material, its meticulous documentation, and its unprecedented candor about the unknown. As Josep Pla said: "... I have the feeling that is one of the hardest works in the country, done with a safe, rhythmic and continuous effort.. The Critical & etymological Dictionary is what it has been left behind a lonely, restless lifetime of effort...".