frolicyoudaoicibaDictYouDict[frolic 词源字典]
frolic: [16] Like its source, Dutch vrolijk, and the related German fröhlich, frolic was originally an adjective meaning ‘happy’. This usage had died out by the end of the 18th century, but in the meantime the adjective had been converted into a verb, and thence into a noun, both of which are still with us. (Dutch vrolijk was formed from the adjective vro ‘happy’, which probably goes back ultimately to a prehistoric Indo-European source which meant primarily ‘spring upwards, move swiftly’.)
[frolic etymology, frolic origin, 英语词源]
frolic (v.)youdaoicibaDictYouDict
"make merry, have fun, romp playfully," 1580s, from frolic (adj.) "joyous, merry, full of mirth" (1530s), from Middle Dutch vrolyc "happy," a compound of vro- "merry, glad" + lyc "like" (see like (adj.)). The first part of the compound is cognate with Old Norse frar "swift," Middle English frow "hasty," from PIE *preu- "to hop" (see frog (n.1)), giving the whole an etymological sense akin to "jumping for joy." Similar formation in German fröhlich "happy." Related: Frolicked; frolicking. As a noun from 1610s.