Óþ-swerian

According to the Old English Dictionary:

óþ-swerian

to abjure, deny on oath :-- Ðá óþswóran hié mid ðam bismerlícestan áðe ðæt hié him nǽfre on fultume nǽre ðéh ðe ða áðas wǽren neár máne ðonne sóðe turpissimam rupti foederis labem adcumu-lavere perjurio, Ors. 4, 3; Swt. 162, 10. Gif hlóþ ðis gedó and eft óþswerian (æt-, MS. B. ) wille, L. Alf. pol. 31; Th. i. 80, 16;. Gif mon tó ðam men feoh getéme ðe his ǽr óþswaren (ætsworen, MS. B. ) hæfde, and æft óþswerian wille, ðþswerige (æt-, MS. B. ) be ðam wíte . . . Gif hé óþswerian nylle . . . . L. In. 35; Th. i. 124, 10-12. oþ-swerian