Inwidda

According to the Old English Dictionary:

inwit;

inwidda

adj. Guileful, deceitful, evil, wicked, malicious :-- Gelpan ne þorfte eald inwidda [inwitta, MSS. B. C. inwuda MS. D.], no cause to boast had he, old and crafty, Chr. 937; Erl. 114, 12 ; Æðelst. 46. Swá se inwidda ofer ealne dæg dryhtguman síne drencte mid wíne so the evil one [Holofernes] all through the day his men drenched with wine, Judth. 10; Thw. 21, 20; Jud. 28. Ealle weleras inwiddæn universa labia dolosa, Ps. Spl. T. 11, 3. Wordum inwitum with guileful words, Cd. 229; Th. 310, 22; Sat. 731. [Cf. Goth. inwinds unjust, perverse.] inwidda