Ge-treówsian

According to the Old English Dictionary:

-trýwsian;

ge-treówsian

p. ode; pp. od To justify one's self, clear one's self, prove one's self innocent; se justĭfĭcāre, se purgēre :-- Getreówsie hine fácnes let him prove himself innocent of the treachery, L. Alf. pol. 17; Th. i. 72, 5, note 8, MS. H: 36; Th. i. 84, 15, note 36, MS. B. ge-treowsian