from The American Heritage® Dictionary of the English Language, 4th Edition
- adv. Archaic Nevertheless; notwithstanding.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. Nevertheless.
from The Century Dictionary and Cyclopedia
- Nevertheless; not the less; notwithstanding.
Middle English, from Old English nā thē lǣs, not less by that : nā, no; see no1 + thȳ, thē : instrumental case of se, this, that; see to- in Indo-European roots + lǣs, less; see less.(American Heritage® Dictionary of the English Language, Fourth Edition)
From na + the + less. Compare later netheless. (Wiktionary)