My wife and I are enjoying a long weekend in beautiful Barcelona, a city graced with the dreamy and daring architecture of Antoni Gaudí. Many like to claim that English gets its word gaudy thanks to the architect’s distinctive style. Gaudí looks and sounds like gaudy. Some may even characterize his works as gaudy. But this etymology is as fanciful as Gaudi’s buildings.

Gaudy
Gaudí was born in 1852. English has been using the adjective gaudy since the early 1500s. That takes care of this bit of folk etymology. But just as Gaudí’s structures are exuberant in shape, texture, and color, so the origin of gaudy enjoys its own “exuberant” origins.
A gaudy once named a larger ornamental bead on Catholic rosaries. This word (1434) is a variant or mistaken plural of gaud (1390), which also named a “trinket” or “bauble.” Ornamental beads lead to ornamental gewgaws, which lead to the adjective gaudy for something “excessively ornate.” This usage is attested by the late 16th century. Earlier in the century, gaudy signified “luxurious” fare but also something “full of trickery” – and such merry-making indeed points us to the deeper roots of the word.
Gaud, the prayer bead, ultimately seems to come from the Latin gaudium, “joy.” In the saying of the Rosary, gaudies marked the so-called Joyful Mysteries, or gaudia in Latin, a set of prayers associated with the early life of Jesus Christ. At the root of gaudium is gaudēre, “to rejoice” or “be merry.” Filtered through French, the -joice in rejoice also comes from gaudēre, as does joy, enjoy, and perhaps even the word jewel. Indo-European philologists root Latin’s gaudēre in *gau-, “to rejoice,” although the American Heritage Dictionary of Indo-European Roots notes it carried the special sense of “to have religious fear or awe” – an experience some have before Gaudí’s work.
Gaudy is also featured in the archaic word gaudy-green, a “yellowish green” that gets its color from dye made out of the weld plant. This gaudy appears to come from the Old French gaude, meaning “weld,” but perhaps its bright, flashy color influenced the ostentation we associate with gaudy.
And as for the name Gaudí? The origin of the family name is unclear, but some think that it comes from the French gaudir, “to enjoy” – which is from the very same Latin root gaudēre. So, it turns out that Gaudí didn’t lend his name to gaudy, but that gaudy, in an etymological manner of speaking, lent its name to Gaudí. Now that’s whimsical.