Wan-hálian

According to the Old English Dictionary:

wan-hálian

p. ode To weaken, impair the health or soundness of something [ :-- Þurh ðisne drync beóð ǽgðær ge ða sáwle ofslagene ge ða líchaman gewanhálode, Homl. Ass. 146, 51. [O. H. Ger. wana-heilen debilitare; ka-wanaheilit debilitatus.] ] wan-halian