fixer (n.)youdaoicibaDictYouDict[fixer 词源字典]
1849, of chemicals, etc.; 1885 as a person who "makes things right;" agent noun from fix (v.). Fixer-upper is from 1967 as "that which repairs other things" (in an advertisement for a glue); by 1976 as a real-estate euphemism for "property that needs a lot of work."[fixer etymology, fixer origin, 英语词源]