Inwit-full

According to the Old English Dictionary:

inwit-full

adj. Deceitful, guileful, malicious, evil :-- Inwitfull dolosus, insidiosus, fraudulentus, callidus, Wrt. Voc. ii. 141, 66. Ne mæg ðǽr inwitfull ǽnig geféran womscyldig mon there may none guileful come, none guilty of sin, Cd. 45; Th. 58, 18; Gen. 498. From ðære inwitfullan yflan tungan a lingua dolosa, Ps. Th. 119, 3. Hé áfylleþ ða inwitfullan word of his tungan he causes deceitful words to fall away from his tongue [cf. Ps.Th. 14, 3, non egit dolum in lingua sua], Blickl. Homl. 55, 16. Ðá geseah sigora waldend hwæt wæs monna mánes and ðæt hí wǽron inwitfulle then saw the Lord of victories what the wickedness of men was, and that they were full of deceit, Cd. 64; Th. 77, 10; Gen. 1273. Synfulra and inwitfulra múþas os peccatoris et dolosi, Ps. Th. 108, 1. inwit-full