ˈnāthlə̇s adverb
or nath·less ˈnath-
Etymology: Middle English natheles, nathles, from Old English nā thē lǣs, from nā not + thē, thȳ (instrumental of sē the, that) + lǣs less — more at no , the , less
archaic : nevertheless : notwithstanding
somewhat they doubted, natheless forth they passed — William Morris