Ge-swiporness

According to the Old English Dictionary:

-swiforness, -swioporness, e;

ge-swiporness

f. Craft, cunning, art: versutia :-- Ðæs deófles geswipornysse syndon swíðe unasecgendlíce the devil's arts are quite indescribable, Shrn. 38, 35. Ðæs ealdan feóndes geswifornis the old enemy's cunning, 37, 14. Se ðe wiste geswipernise [-swiopornisse, Rush.] hiora qui sciens versutiam eorum, Mk. Skt. Lind. 12, 15. ge-swiporness