thusly (adv.)youdaoicibaDictYouDict[thusly 词源字典]
1865 (in an Artemus Ward dialect humor piece), from thus + -ly (2). A double adverb. Perhaps originally a humorous or mocking over-correction of thus; it has gained some currency but earns frowns for the user.[thusly etymology, thusly origin, 英语词源]