carp (v.)youdaoicibaDictYouDict[carp 词源字典]
"complain," early 13c., originally "to talk," from Old Norse karpa "to brag," which is of unknown origin; meaning turned toward "find fault with" (late 14c.), probably by influence of Latin carpere "to slander, revile," literally "to pluck" (see harvest (n.)). Related: Carped; carping.[carp etymology, carp origin, 英语词源]