Fǽcne

According to the Old English Dictionary:

fácne;

fǽcne

adj. Deceitful, fraudulent, guileful, wicked; subdŏlus, dŏlōsus, mălignus, nēquam :-- Swá oft sceaða fǽcne forféhþ eorlas as oft the guileful robber surprises men, Exon. 20 b; Th. 54, 20; Cri. 871. Hæfde fǽcne hyge he had a crafty soul, Cd. 23; Th. 29, 1; Gen. 443. Of firenfulra fǽcnum handum from the deceitful hands of the wicked, Ps. Th. 81, 4: 105, 10: 136, 3. DER. fela-fǽcne, un-. fæcne