11 letters · 14 points in Scrabble
adverb despite anything to the contrary (usually following a concession)
originA modification of natheless after none, from Middle English natheles, from Old English nān þȳ lǣs, nā þē lǣs, nā þȳ lǣs. By surface analysis, none + the + less.
Etymology from Wiktionary, CC BY-SA 3.0