The forms in -er, -est, are properly adverbial and not adjectival.
tigðe = tithe, tenth, occurs in l. [895], and tigðes in l. [1628].
Orm uses the more Northern ȝho (Northumbrian sco).
get = she it: "al get bit otwinne," she biteth it all in two (Bestiary, O.E. Miscell., p. 9).
See p. xix.