Dyderung

According to the Old English Dictionary:

dydrung, e;

dyderung

f. An illusion, delusion, pretence; delūsio, simŭlātio :-- Ðæs hálgan andwerdnyss acwencte ðæs deófles dyderunge the presence of the saint quenched the delusion of the devil, Homl. Th. ii. 140, 19. Hit wæs ðæs deófles dydrung it was an illusion of the devil, ii. 166, 6. He nys wís ðe mid dydrunge hyne sylfne beswícþ non est sapiens qui simulātiōne semet ipsum decĭpit, Coll. Monast. Th. 33, 3. DER. be-dydrung. dyderung