vulgaryoudaoicibaDictYouDict[vulgar 词源字典]
vulgar: [14] Latin vulgus, a word of uncertain origin, denoted the ‘common people’. From it was derived the adjective vulgāris, from which English gets vulgar. The Vulgate [17], a version of the Bible translated into Latin in the 4th century, was so called because it made the text available to the ‘common people’. Divulge comes from the same source, and means etymologically ‘make known to the common people’.
=> divulge[vulgar etymology, vulgar origin, 英语词源]
vulgar (adj.)youdaoicibaDictYouDict
late 14c., "common, ordinary," from Latin vulgaris, volgaris "of or pertaining to the common people, common, vulgar, low, mean," from vulgus "the common people, multitude, crowd, throng," perhaps from a PIE root *wel- "to crowd, throng" (cognates: Sanskrit vargah "division, group," Greek eilein "to press, throng," Middle Breton gwal'ch "abundance," Welsh gwala "sufficiency, enough") [not in Watkins]. Meaning "coarse, low, ill-bred" is first recorded 1640s, probably from earlier use (with reference to people) with meaning "belonging to the ordinary class" (1530). Related: Vulgarly.