whatsoever (pron.)youdaoicibaDictYouDict[whatsoever 词源字典]
"of whatever nature, kind, or sort," mid-13c., quuat-so-euere, from whatso "whatever" (c. 1200; see what), an emphatic referring to things, + ever. A double intensive of what. As an adjective from mid-15c.[whatsoever etymology, whatsoever origin, 英语词源]