A-swarcan

According to the Old English Dictionary:

a-swarcan

To languish, consume; tabescere :-- Á-ýdlian oððe aswarcan oððe acwínan oððe aswindan ðú dydest swá swá ǽtterloppan oððe ryngan sáwle his tabescere fecisti sicut araneam animam ejus, Ps. Lamb. 38, 12. a-swarcan