sorehead (n.)youdaoicibaDictYouDict[sorehead 词源字典]
"mean, discontented person," 1848, American English, from sore (adj.) + head (n.). Especially in 19c. U.S. political slang, a person who is dissatisfied through lack of recognition or reward for party service (1862).[sorehead etymology, sorehead origin, 英语词源]