Adverb

(-)

(archaic) Nevertheless.

* 1819 , Walter Scott, Ivanhoe :

And if he doth not return, this Wilfred may natheless repay us our charges when he shall gain treasure by the strength of his spear and of his sword, even as he did yesterday and this day also.

* 1871 , (Dante Gabriel Rosetti), Sunset Wings , lines 18-20:

With the first light she laughed, and the last light / Glows round her still; who natheless in the night / At length must make an end.

* 1885 , (Sir Richard Burton), The Book of the Thousand Nights and a Night , Night 13:

He had tortured the lady with exceeding tortures, natheless she would not confess to him aught [...].

Adverb

(-)

(conjunctive) Nevertheless.

* {{quote-magazine, year=2013, month=May-June, author= William E. Conner

, title= An Acoustic Arms Race , volume=101, issue=3, page=206-7, magazine=(American Scientist) , passage=Nonetheless , some insect prey take advantage of clutter by hiding in it. Earless ghost swift moths become “invisible” to echolocating bats by forming mating clusters close (less than half a meter) above vegetation and effectively blending into the clutter of echoes that the bat receives from the leaves and stems around them.}}