Un-treów

According to the Old English Dictionary:

e;

un-treów

f. Bad faith, faithlessness, perfidy, fraud :-- Mé ðás woruldsǽlþa blindne on ðis dimme hol forlǽddon, and mé ðá berýpton rǽdes and frófre for heora untreówum, Met. 2, 13. Gif ðú heora untreówa onscunige, oferhoga hí, and ádríf hí fram ðé, for ðam hí spanaþ ðé tó ðínre unþearefe si perfidam perhorrescis, sperne atque abjice perniciosa ludentem, Bt. 7, 2; Fox 18, 8. Heó ðæt leóht geseah ellor scríðan, ðæt hé hire þurh untreówa tácen iéwde, Cd. Th. 48, 10; Gen. 773. [O. Sax. un-trewa: O. H. Ger. un-triuwa fraus.] un-treow