fracas (n.)youdaoicibaDictYouDict[fracas 词源字典]
1727, from French fracas "crash, sudden noise; tumult, bustle, fuss" (15c.), from Italian fracasso "uproar, crash," back-formation from fracassare "to smash, crash, break in pieces," from fra-, a shortening of Latin infra "below" (see infra-) + Italian cassare "to break," from Latin quassare "to shake" (see quash).[fracas etymology, fracas origin, 英语词源]