(archaic) In any fashion, of any kind; used for emphasis after words such ashow,what,which etc.
1669, John Owen,A Practical Exposition on the 130th Psalm:
How longsoever it hath continued, if it be against reason, it is of no force in law.
1726 October 28, [Jonathan Swift], “The Author by an Extraordinary Stratagem Prevents an Invasion.[…]”, inTravels into Several Remote Nations of the World.[…][Gulliver’s Travels], volume I, London:[…]Benj[amin] Motte,[…],→OCLC, part I (A Voyage to Lilliput),page91:
For, by the fundamental Laws of the Realm, it is Capital in any Perſon, of what Qualityſoever, to make water within the Precincts of the Palace.
1922,Michael Arlen, “1/5/1”, in“Piracy”: A Romantic Chronicle of These Days[1]:
And in the meanwhile, Society shivered a little feverishly, filled now with the scions of those who had come over with the Jewish and American Conquests. Escutcheons were becoming valueless, how sinistersoever the blots and clots upon them.
1922,Eleanour Sinclair Rohde,The Old English Herbals, London: Longmans, Green and Co., page16:
[T]hen go in silence and, though anythingsoever of an awful sort or man meet thee, say not thou to him any word ere thou come to the wort which on the evening before thou markedst[.]