decor (n.)youdaoicibaDictYouDict[decor 词源字典]
1897, from French décor (18c.), back-formation from décorer "to decorate" (14c.), from Latin decorare (see decorate). It thus duplicates Latin decor "beauty, elegance, charm, grace, ornament." Originally a theater term in English; general use is since 1926.[decor etymology, decor origin, 英语词源]