from a- prefix + weary; cf. ahungry, also such pairs as live, alive
From: A Midsommer Nights Dreame
As it hath been sundry times publickely acted,
by the Right honourable, the Lord Chamberlaine his servants.
Written by William Shakespeare, 1600
Edited by F.J. Furnivall, 1908
Actus Quintus. Scena Prima.