absolutely (adv.)youdaoicibaDictYouDict[absolutely 词源字典]
late 14c., "unconditionally, completely," from absolute (adj.) + -ly (2). From mid-15c. as "without reference to anything else, not relatively;" meaning "to the utmost degree" emerged by mid-16c. As a colloquial emphatic in American English, it is attested from 1892.[absolutely etymology, absolutely origin, 英语词源]