Dídan

According to the Old English Dictionary:

dídan

p. de To put to death; Ll. Th. i. 172, 13. [N. E. D. dead; vb. II. Goth. dauþjan mortificare: O. H. Ger. tóden to kill: Icel. deyða.] v. dýdan in Dict.: á-dídan. didan